Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
After testing Yosemite for over 2 months, here's what's DOA about it so far...

#1 First off and this is embarrassing for Apple, but the Feedback program while collecting data from your computer disables your ethernet internet! I've complained since day 1. They never fixed it. Reported since BETA 1.

#2 Plugging in any iPhone, at least since IOS 8 (or the latest 8), disables your bluetooth completely, meaning goodbye Magic Mouse, goodbye wireless keyboard. Seems to only happen when the iPhone is completely charged. But only solution is a re-boot or standby peripherals. COMPLETELY UNACCEPTABLE.

#3 No clue as to whether this is related to #2, but constant warnings that Apple iPhone peripheral is not compatible with this phone. Doesn't matter if it's Apple's cable or not. iPhone is then not recognized and Image Capture program fails to work and charging stops. Tested with several iPhones, same result.

#3 No sound on SOUND keys as in you can't tell how loud you're increasing the volume from the keys. Also sound to send mail is so quiet, you'll never know if you sent the mail or not. Reported since BETA 1.

#4 Displays issues. No matter how many times you change it, Displays will not boot to the correct display you've set. For people with multiple displays, this means turning on another display or in my case having to switch to an HDTV to boot up and log in. COMPLETELY UNACCEPTABLE! And I've reported this since BETA 1 too.

#5 Some Mac OSX partitions are no longer compatible with disk repair software, so be careful. You'll get a warning that your disk mapping on a drive is no longer compatible.

#6 There is no indication as to when Spotlight is indexing. That's very annoying since normally you'd wait until indexing stops to use a Mac because of the slowdown.

#7 Preview loads for no apparent reason when an iPhone is connected. No clue why.

Yosemite is NOT READY FOR PRIMETIME in my opinion after 2 months of frustration. I feel like Apple owes me money. Oh, I should add, the installation corrupted my Mavericks installation too causing all Mail accounts there to be corrupted, but I can't say that's related to Yosemite except that it doesn't like other Mac OS X partitions. None of the above problems happened in Mavericks.

Owes you money? How is that exactly? You have been using beta software and had to agree to the terms when installing the software. Once you installed the software, you gave up any and all possible claims against Apple etc.
 
Huh??? Yosemite looks gorgeous on retina. I installed it on my older non-retina and it looks TERRIBLE so I'm gonna leave it with Mavericks (it's a 2009 MBP).

Or did you have a typo there?
No, you're reading him wrong. He's saying it is optimized for Retina displays at the expense of non-Retina displays, so actually you two are saying the same thing.

He didn't say that it's "just not" optimized for Retina, he said it's "not just" optimized for Retina (as in, not only did Apple optimize for Retina, but they did so to such an extent that they made non-Retina worse). In English, order of words matters. :)

-- Nathan
 
After testing Yosemite for over 2 months, here's what's DOA about it so far...

#1 First off and this is embarrassing for Apple, but the Feedback program while collecting data from your computer disables your ethernet internet! I've complained since day 1. They never fixed it. Reported since BETA 1.

#2 Plugging in any iPhone, at least since IOS 8 (or the latest 8), disables your bluetooth completely, meaning goodbye Magic Mouse, goodbye wireless keyboard. Seems to only happen when the iPhone is completely charged. But only solution is a re-boot or standby peripherals. COMPLETELY UNACCEPTABLE.

#3 No clue as to whether this is related to #2, but constant warnings that Apple iPhone peripheral is not compatible with this phone. Doesn't matter if it's Apple's cable or not. iPhone is then not recognized and Image Capture program fails to work and charging stops. Tested with several iPhones, same result.

#3 No sound on SOUND keys as in you can't tell how loud you're increasing the volume from the keys. Also sound to send mail is so quiet, you'll never know if you sent the mail or not. Reported since BETA 1.

#4 Displays issues. No matter how many times you change it, Displays will not boot to the correct display you've set. For people with multiple displays, this means turning on another display or in my case having to switch to an HDTV to boot up and log in. COMPLETELY UNACCEPTABLE! And I've reported this since BETA 1 too.

#5 Some Mac OSX partitions are no longer compatible with disk repair software, so be careful. You'll get a warning that your disk mapping on a drive is no longer compatible.

#6 There is no indication as to when Spotlight is indexing. That's very annoying since normally you'd wait until indexing stops to use a Mac because of the slowdown.

#7 Preview loads for no apparent reason when an iPhone is connected. No clue why.

Yosemite is NOT READY FOR PRIMETIME in my opinion after 2 months of frustration. I feel like Apple owes me money. Oh, I should add, the installation corrupted my Mavericks installation too causing all Mail accounts there to be corrupted, but I can't say that's related to Yosemite except that it doesn't like other Mac OS X partitions. None of the above problems happened in Mavericks.

#3(b) is not a bug just a new direction. Outside of #6 i have NONE of these issues. And i've been testing since day one.

¯\(º_o)/¯
 
Not if you do less with each release. Smaller but more frequent updates are the way forward. Mammoth releases tend to create even more problems.

It's hard to do Big Things in 12 months.

I'd rather wait 18-24 months and get a replacement for HFS+, or something of similar caliber. Leave the little tweaks for 0.x updates.

----------

I installed the first GM last week on my 2014 15" rMBP (w/NVIDIA GPU) and for the most part it's been pretty good. I can't run the OS X Server app for connecting to my Mavericks server box and Factorio stopped working, but otherwise most things seem okay. I do get the feeling things are a tad slower UI wise, but I would guess that by .1 or .2, things should be pretty good.

One thing that is pretty clear is that this OS is not just optimized for a retina display, it doesn't look very good on non retina displays. On Mavericks, the retina display always looked better, but I didn't feel like my non retina displays looked bad. Now they look bad to me. Very similar to how non retina iOS devices looked once iOS 7 came out.

I really hope they tweak the non retina displays some more over the next few updates. Unlike on the iOS side, it's not likely that everyone will be able to just switch to retina displays for everything anytime soon. The OS is going to have to support them for many years to come.

Hmmm... Hope this isn't as bad as it sounds.
 
After testing Yosemite for over 2 months, here's what's DOA about it so far...

#1 First off and this is embarrassing for Apple, but the Feedback program while collecting data from your computer disables your ethernet internet! I've complained since day 1. They never fixed it. Reported since BETA 1.

#2 Plugging in any iPhone, at least since IOS 8 (or the latest 8), disables your bluetooth completely, meaning goodbye Magic Mouse, goodbye wireless keyboard. Seems to only happen when the iPhone is completely charged. But only solution is a re-boot or standby peripherals. COMPLETELY UNACCEPTABLE.

#3 No clue as to whether this is related to #2, but constant warnings that Apple iPhone peripheral is not compatible with this phone. Doesn't matter if it's Apple's cable or not. iPhone is then not recognized and Image Capture program fails to work and charging stops. Tested with several iPhones, same result.

#3 No sound on SOUND keys as in you can't tell how loud you're increasing the volume from the keys. Also sound to send mail is so quiet, you'll never know if you sent the mail or not. Reported since BETA 1.

#4 Displays issues. No matter how many times you change it, Displays will not boot to the correct display you've set. For people with multiple displays, this means turning on another display or in my case having to switch to an HDTV to boot up and log in. COMPLETELY UNACCEPTABLE! And I've reported this since BETA 1 too.

#5 Some Mac OSX partitions are no longer compatible with disk repair software, so be careful. You'll get a warning that your disk mapping on a drive is no longer compatible.

#6 There is no indication as to when Spotlight is indexing. That's very annoying since normally you'd wait until indexing stops to use a Mac because of the slowdown.

#7 Preview loads for no apparent reason when an iPhone is connected. No clue why.

Yosemite is NOT READY FOR PRIMETIME in my opinion after 2 months of frustration. I feel like Apple owes me money. Oh, I should add, the installation corrupted my Mavericks installation too causing all Mail accounts there to be corrupted, but I can't say that's related to Yosemite except that it doesn't like other Mac OS X partitions. None of the above problems happened in Mavericks.

Amazing. Everything you said besides #3, I have not seen at all in the 5 different Macs models that I've installed this public beta on. I reported a lot of bugs which seemed to have been fixed now but I've never seen of these issues. You probably need to try another clean install of OS X Yosemite.
 
You can still get sound cues when the volume is changed. It's now just turned off by default. A good move I reckon.

I don't find the new mail "swoosh" sound too quiet. I like it better than the old one.

I don't think #6 is an issue. Would you really let Spotlight indexing stop you from working? It's supposed to be a low priority background task. Why care about it?

I also haven't noticed most of the other issues you describe.

My App Store purchases page still says Public Beta 4, though I got an offer to update in the updates section. I want to download the full installer though... :(
 
broke drivers for AMD gpus, the default gamma is too high that it kills your eyes and the FPS are just embarrassing . Not improving in performance overall and i don't expect this from federighi who produced garbage since he joined apple. but hey, at least he attend many acting classes.
 
Since 10.7 changes in development, I've found many bugs are resolved by performing a clean install as development progresses towards the GM release. Previously, each beta (usually released every two weeks) required downloading the dmg/ISO, burning it to a DVD or bootable USB, and running a clean install. This allowed better OS X debugging by eliminating possible conflicts with third party app's and plugins and improper updates that delta DP's currently may produce. Development also took place over a 1 1/2 to 2 year period.

OS X on an annual release schedule with delta updates is not proving reliable. 10.9 was just updated to 10.9.5, and development will likely continue alongside 10.10. Rushing major OS X releases does not a decent OS make.
 
Hence GM Candidate. I for one prefer the previously used term, release candidate.

In my 25+ years in software development 'golden master' was meant to be a pretty much finished product. No new features, a few minor bug fixes. It was meant to find any show-stioppers. And by that time there better not be any show-stoppers or some real a$$ chewing would be in order.

I guess terms change. What's now called 'beta' would have been an 'alpha' in my shop.
 
It's hard to do Big Things in 12 months.

I'd rather wait 18-24 months and get a replacement for HFS+, or something of similar caliber. Leave the little tweaks for 0.x updates.

----------



Hmmm... Hope this isn't as bad as it sounds.

Big things can be done in 12 months. But it's best to do them one at a time. Issue a beta, test, rinse and repeat with the next one.

I can't remember ever putting in big new features that did not break something. Hence the beta schedule. Apple's penchant for secrecy hurts them here. I would prefer new features be implemented throughout the year rather than huge new feature sets all at once. My experience is that you get better, more stable releases like this.
 
I just went through this 100+ MB update and there are no changes anywhere, literally.

This update was only to improve performance and fix bugs. They are really finishing up for the release.

That's the best kind of update...
 
After testing Yosemite for over 2 months, here's what's DOA about it so far...

#1 First off and this is embarrassing for Apple, but the Feedback program while collecting data from your computer disables your ethernet internet! I've complained since day 1. They never fixed it. Reported since BETA 1.

#2 Plugging in any iPhone, at least since IOS 8 (or the latest 8), disables your bluetooth completely, meaning goodbye Magic Mouse, goodbye wireless keyboard. Seems to only happen when the iPhone is completely charged. But only solution is a re-boot or standby peripherals. COMPLETELY UNACCEPTABLE.

#3 No clue as to whether this is related to #2, but constant warnings that Apple iPhone peripheral is not compatible with this phone. Doesn't matter if it's Apple's cable or not. iPhone is then not recognized and Image Capture program fails to work and charging stops. Tested with several iPhones, same result.

#3 No sound on SOUND keys as in you can't tell how loud you're increasing the volume from the keys. Also sound to send mail is so quiet, you'll never know if you sent the mail or not. Reported since BETA 1.

#4 Displays issues. No matter how many times you change it, Displays will not boot to the correct display you've set. For people with multiple displays, this means turning on another display or in my case having to switch to an HDTV to boot up and log in. COMPLETELY UNACCEPTABLE! And I've reported this since BETA 1 too.

#5 Some Mac OSX partitions are no longer compatible with disk repair software, so be careful. You'll get a warning that your disk mapping on a drive is no longer compatible.

#6 There is no indication as to when Spotlight is indexing. That's very annoying since normally you'd wait until indexing stops to use a Mac because of the slowdown.

#7 Preview loads for no apparent reason when an iPhone is connected. No clue why.

Yosemite is NOT READY FOR PRIMETIME in my opinion after 2 months of frustration. I feel like Apple owes me money. Oh, I should add, the installation corrupted my Mavericks installation too causing all Mail accounts there to be corrupted, but I can't say that's related to Yosemite except that it doesn't like other Mac OS X partitions. None of the above problems happened in Mavericks.

#1,2,4,7 are not issues for me, or for any of the dozens of friends I have running Yosemite. You may want to clean install, or take other troubleshooting steps, as these are not problems inherent with Yosemite but rather with your particular configuration.

#3 - The sound thing - I DO in fact have audible feedback when adjusting volume with the volume keys. There was an issue with this earlier in the beta period. Are you sure that you have "Play feedback when volume is changed" checked off in the sound preferences? As for the send mail sound - not sure. Mine seems normal. Perhaps you should check the "alert volume" settings in the sound preferences?

#5 - Disk Utilities, as well as many system-altering, or low-level hardware type utilities often do break with any major OS update. This is extremely common, and the best of the utilities will update very quickly, the less useful (or poorly supported) utilities will get updated eventually, and the old legacy utilities will fall off the radar. Unfortunately, that's the way it goes. The developers of these utilities have had give or take at least 6 months to prepare for the Yosemite launch. That being said, anyone with a production environment that depends on any of these utilities should wait to upgrade (and is used to having to wait) - reliability > features. Always.

#6 Although I agree with you that I'd like to see an indication of Spotlight indexing, I disagree that the indexing process slows down the computer so much so that it becomes unusable. I haven't experienced this in any recent release of the OS.

All of the above being said, everyone, including Apple, agrees that Yosemite is not ready for release. That is why it is a "release candidate"... it hasn't been approved for release yet. The most constructive thing to do would be to report bugs to Apple in an appropriate manner. Additionally, confirm that you are able to reproduce the bugs in a test user, as well as a partition that has a clean install of Yosemite.
 
Big things can be done in 12 months. But it's best to do them one at a time. Issue a beta, test, rinse and repeat with the next one.

I can't remember ever putting in big new features that did not break something. Hence the beta schedule. Apple's penchant for secrecy hurts them here. I would prefer new features be implemented throughout the year rather than huge new feature sets all at once. My experience is that you get better, more stable releases like this.

Interesting idea about trickling out new features when they are ready. I hadn't thought about it until you mentioned it, but these humongous updates at 12-18 month intervals are a relic of brick and mortar software distribution. With online distribution there's no reason to bundle everything into big updates except that it gives developers a the schedule they're used to.
 
Installed earlier this afternoon. Once I got through the initial index and Time Machine backup things have been very smooth on my 2011 Air.

The only thing I can't seem to figure out is that I cannot get my iPhone or iPad to show up as a personal hotspot in the wi-fi menu via Continuity. Bluetooth is on and everything is authorized. The iPhone and iPad are talking to each other; I can see them as active hotspots in each other's Settings > Wi-fi menus, but not on the Air. Maybe they haven't turned this feature on in Yosemite yet?
 
After testing Yosemite for over 2 months, here's what's DOA about it so far...

I tested Yosemite, from the day it got announced, on a corporate environment, on a non production macbook air. I had a million problems, but that is what a DP is...

#1 First off and this is embarrassing for Apple, but the Feedback program while collecting data from your computer disables your ethernet internet! I've complained since day 1. They never fixed it. Reported since BETA 1.

Are you a developer or a public beta tester... ? I used the apple bug feedback tool for developers and it worked as it should... Did you install this on a production laptop or a test machine?

#2 Plugging in any iPhone, at least since IOS 8 (or the latest 8), disables your bluetooth completely, meaning goodbye Magic Mouse, goodbye wireless keyboard. Seems to only happen when the iPhone is completely charged. But only solution is a re-boot or standby peripherals. COMPLETELY UNACCEPTABLE.

This must be you. I have been using the trackpad, the magic mouse, and my logitech H800 Bluetooth headphones without any issues.

#3 No clue as to whether this is related to #2, but constant warnings that Apple iPhone peripheral is not compatible with this phone. Doesn't matter if it's Apple's cable or not. iPhone is then not recognized and Image Capture program fails to work and charging stops. Tested with several iPhones, same result.

You are failing to mention which build have you been using and what iOS version you had on the iPhones..

#3 No sound on SOUND keys as in you can't tell how loud you're increasing the volume from the keys. Also sound to send mail is so quiet, you'll never know if you sent the mail or not. Reported since BETA 1.

This is not a bug. It's by design.

#4 Displays issues. No matter how many times you change it, Displays will not boot to the correct display you've set. For people with multiple displays, this means turning on another display or in my case having to switch to an HDTV to boot up and log in. COMPLETELY UNACCEPTABLE! And I've reported this since BETA 1 too.

Don't know what to tell you. My test laptop is connected to a cheap-o dell monitor using thunderbolt to dvi plug and a native thunderbolt LED display and I have not experienced this issue. Again you are not saying which build you are using...

#5 Some Mac OSX partitions are no longer compatible with disk repair software, so be careful. You'll get a warning that your disk mapping on a drive is no longer compatible.

o_O I have never experienced this either. I have tested on a MBA with 256 FlashDrive and Macbook Pro 13" with a 500G HDD (non SSD) and a MBP 13" with a Corsair SSD, and this was a non issue.

#6 There is no indication as to when Spotlight is indexing. That's very annoying since normally you'd wait until indexing stops to use a Mac because of the slowdown.

Spotlight in Yosemite indexes when your system is idle and not doing anything cpu intensive.

#7 Preview loads for no apparent reason when an iPhone is connected. No clue why.

Never have experienced this... either. Don't know what to tell you.

Yosemite is NOT READY FOR PRIMETIME in my opinion after 2 months of frustration. I feel like Apple owes me money. Oh, I should add, the installation corrupted my Mavericks installation too causing all Mail accounts there to be corrupted, but I can't say that's related to Yosemite except that it doesn't like other Mac OS X partitions. None of the above problems happened in Mavericks.

I think that you were a casual user, who got excited at all the pretty stuff Yosemite had, and you decided to either download a Developer Preview from *cough* torrent site *cough* or you are a legit Public Beta tester... Either way your review is very amateur-ish. You never present which version of the DP or the Public Beta you are using. Did you use a testing macbook pro or iMac or mac pro? or did you installed this on your production computer?

There is a reason why Apple and many other developers releases these previews or beta's, and its for this same reason, for people like you and me to test their software. Report when you find something that doesn't work or test on your current enterprise environment.

In my experience, and my testing in the Enterprise, Yosemite DP1 was a shell.. basically I couldn't join the Domain nor run Lync or connect to exchange. It was pretty and that was about it... This went on for about 2 or 3 Developer Preview builds more... It wasn't until DP5 that I could do any of those things above, and trust me, that is the meat and bones of my corporate structure...

Even when we passed it to other Tech Support Groups for further testing, we advised them not to use any of the builds we were sending on a production computer...

I really don't know what to tell you other than... wipe your computer clean and make a clean install of the OS. For me, (and I have been running it for 2 weeks on my production iMac), it has been pretty solid so far. I can connect to exchange and Lync finally works super well. I have been able to test a few of the gimmicky stuff like Continuity and hands-off...

One of the few things I have not been able to test at all is receiving iPhone calls on my computer. I have not been able to text people that are on other phones other than iPhones from my mac either.

Every testing experience is different, people need to remember that it is a Public Test for a reason... These tests are not only for your amusement but for you to see where they fail so you can let the developers know where they need to pay attention.

Whining and crying during a beta is kind of Meh. The only thing I can do for you in that instance is offer you a hankie.
 
After testing Yosemite for over 2 months, here's what's DOA about it so far...

#1 First off and this is embarrassing for Apple, but the Feedback program while collecting data from your computer disables your ethernet internet! I've complained since day 1. They never fixed it. Reported since BETA 1.

#2 Plugging in any iPhone, at least since IOS 8 (or the latest 8), disables your bluetooth completely, meaning goodbye Magic Mouse, goodbye wireless keyboard. Seems to only happen when the iPhone is completely charged. But only solution is a re-boot or standby peripherals. COMPLETELY UNACCEPTABLE.

#3 No clue as to whether this is related to #2, but constant warnings that Apple iPhone peripheral is not compatible with this phone. Doesn't matter if it's Apple's cable or not. iPhone is then not recognized and Image Capture program fails to work and charging stops. Tested with several iPhones, same result.

#3 No sound on SOUND keys as in you can't tell how loud you're increasing the volume from the keys. Also sound to send mail is so quiet, you'll never know if you sent the mail or not. Reported since BETA 1.

#4 Displays issues. No matter how many times you change it, Displays will not boot to the correct display you've set. For people with multiple displays, this means turning on another display or in my case having to switch to an HDTV to boot up and log in. COMPLETELY UNACCEPTABLE! And I've reported this since BETA 1 too.

#5 Some Mac OSX partitions are no longer compatible with disk repair software, so be careful. You'll get a warning that your disk mapping on a drive is no longer compatible.

#6 There is no indication as to when Spotlight is indexing. That's very annoying since normally you'd wait until indexing stops to use a Mac because of the slowdown.

#7 Preview loads for no apparent reason when an iPhone is connected. No clue why.

Yosemite is NOT READY FOR PRIMETIME in my opinion after 2 months of frustration. I feel like Apple owes me money. Oh, I should add, the installation corrupted my Mavericks installation too causing all Mail accounts there to be corrupted, but I can't say that's related to Yosemite except that it doesn't like other Mac OS X partitions. None of the above problems happened in Mavericks.

Wow, I have none of these issues except #6. And #3 (sound) is just funny. Clearly you aren't even capable of doing the smallest bit of problem solving. This is not a bug and is simply a preference setting that has been addressed over and over and over and over and over again. If you have been a beta tester since the beginning, how have you not read about this a hundred times already?

So really, most of your issues are clearly your own issues.
 
Does anyone know if its likely/unlikely/possible that Apple will release new Macbook Pros at the October event?

The Broadwell processor has been delayed until next year, that seems to be fact now.

But a new 5K iMac *could* mean a new 5K Thunderbolt monitor. The remaining problem is that MacBook Pro's are stuck on the 750M 2GB Nvidia GPU. If....If a new TB Monitor is revealed it would make sense for a MBP with a 6GB+ GPU solution to support it. Though maybe it will be just for the desktop Mac Pro.
 
Probably because they plan on killing it in 10.11.

Yupp, seems rather obvious since Notification Center has the possibility of replacing it to some extend.

I'm actually surprised it survived that "long" going by Apple's tendency to kill off things rather quickly.
Come to think of it, the iPod Classic discontinuation was probably one of the most un-Apple things I've ever witnessed.
I'm glad it stuck around that long, but boy am I surprised.

Glassed Silver:mac
 
Does Instant Hotspot work for anyone on the first try? With both my Retina MacBook (2014) an iMac (2013) I have to unlock my iPhone 6+ and then click on WiFi to see my instant hotspot show up. If I search WiFi locations when the 6+ is asleep/locked the instant hotspot never shows up.

My iPad Mini can find the instant hotspot just fine no matter what. This is only happening from Yosemite for me.

I am on Public Beta 5, but this happened for me on 3 and 4 too.
 
I feel like my iOS 8 conversion is incomplete without Yosemite. I'd put money on that being a contributing factor to iOS 8 adoption slowing down. Once Yosemite is publicly released, I see 8 ticking up again. Once you get 8.1 on market, I think we'll push that 80% mark.

I wonder what portion of iPhone owners also own Macs. 20%? higher? lower? Legit question.
 
After testing Yosemite for over 2 months, here's what's DOA about it so far...

#1 First off and this is embarrassing for Apple, but the Feedback program while collecting data from your computer disables your ethernet internet! I've complained since day 1. They never fixed it. Reported since BETA 1.

#2 Plugging in any iPhone, at least since IOS 8 (or the latest 8), disables your bluetooth completely, meaning goodbye Magic Mouse, goodbye wireless keyboard. Seems to only happen when the iPhone is completely charged. But only solution is a re-boot or standby peripherals. COMPLETELY UNACCEPTABLE.

#3 No clue as to whether this is related to #2, but constant warnings that Apple iPhone peripheral is not compatible with this phone. Doesn't matter if it's Apple's cable or not. iPhone is then not recognized and Image Capture program fails to work and charging stops. Tested with several iPhones, same result.

#3 No sound on SOUND keys as in you can't tell how loud you're increasing the volume from the keys. Also sound to send mail is so quiet, you'll never know if you sent the mail or not. Reported since BETA 1.

#4 Displays issues. No matter how many times you change it, Displays will not boot to the correct display you've set. For people with multiple displays, this means turning on another display or in my case having to switch to an HDTV to boot up and log in. COMPLETELY UNACCEPTABLE! And I've reported this since BETA 1 too.

#5 Some Mac OSX partitions are no longer compatible with disk repair software, so be careful. You'll get a warning that your disk mapping on a drive is no longer compatible.

#6 There is no indication as to when Spotlight is indexing. That's very annoying since normally you'd wait until indexing stops to use a Mac because of the slowdown.

#7 Preview loads for no apparent reason when an iPhone is connected. No clue why.

Yosemite is NOT READY FOR PRIMETIME in my opinion after 2 months of frustration. I feel like Apple owes me money. Oh, I should add, the installation corrupted my Mavericks installation too causing all Mail accounts there to be corrupted, but I can't say that's related to Yosemite except that it doesn't like other Mac OS X partitions. None of the above problems happened in Mavericks.

This entire list tells me you are not a developer. I will interject with another poster who responded regarding Indexing.

Whether on OS X, Linux or FreeBSD the systems are designed to index their system changes as background processing while the system resources are not being taxed.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.