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Yes, it is. The only, unstable, application is Safari but I am using Chrome as default browser.
 
Mavericks doesn't like Aperture running on an external display (Apple Thunderbolt Display in my case). It crashes when I try to edit photos.
 
I mentioned this in another thread...

I found Mavericks to be extremely stable on my 2013 iMac.

I wanted to keep it as the primary operating system, but recently went back to Mountain Lion for two major reasons...

1. EyeTV does not work. This is a major program for me as I like to have a small television window playing on my secondary display while I work. I was really missing this feature. I have emailed the developer but have not heard back.

2. Copy and paste from email was not working well. My business requires a lot of it, and I was having problems making that work.


Otherwise, I found no other problems with Mavericks. Would have preferred to stay with it, and will probably switch back as soon as Elgato has an update to their software available and future DPs are released.
 
Been enjoying Mavericks as a primary OS. I initially dual-booted but the little enhancements make it hard to go back for me, and it's very stable so now it's the primary OS on my Mac.

I've upgraded to Mavericks as my main OS for my 2011 MBA and 2012 iMac without making a time machine backup of Mountain Lion!

The only minor quirk I see is that when I close Messages with CMD + W or the little "x" it loses the little glowing thin rectangle on the bottom, indicating that I've totally quit the program. It is actually running though, even though the little glowing thin line isn't there.

Many applications do this in Mountain Lion already. Eg Textedit. Actually they stay resident in your memory and can relaunch very quickly, also you continue to receive messages even when it's closed.
 
Anyone have an update on how stable the latest build (Preview 7) is? Is it okay to use as your daily driver? Any compatibility issues?
 
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I have been using Mavericks since the first DP. I don't wanna talk for others, but personally I can say I've been using this thing as my primary OS since DP4, and I never came back to ML.

The only thing I miss so far: Perian

Sure I can use VLC or MPlayerX to play multiple video files, but I miss not having access to the "Quicklook" features (no thumbnails in particular).
 
I still am running very smooth with DP1.

Shutdown is slow though and startup is a little slower than ML - although I don't really care about these so much.

I only had once a small graphic issue when the menu bar didn't refresh for like 1 minute or so and there was no text then all of a sudden it reappeared. It happened once only.

I mainly ran Lightroom 5, PS CS6, Some Album design SW, Safari, iTunes, uTorrent, VLC, OnONE Perfect Suite, FCP X, Mail, FaceTime and Messages.

One thing I notice quite clear is the response of menus and actions in applications in general. I tend to have some lag when opening an App or something moves slow. Now... I am very very impressed.

Mavericks is as ML should have been. But this is just beta. We'll see how it ends up in the final version. I had experiences when some DPs were faster than GMs.

These I used extensively. Battery life has improved but just a little (maybe it's an illusion) however I find my fans spinning much less than before.

It seems like some improvements are working on the CPU load. I will see later on.

Thinking of installing it but was worried about crashing lightroom 5 seems to be fine for you right. Now to find out if VMware fusion 5 works fine with it.
 
I have been using Mavericks since the first DP. I don't wanna talk for others, but personally I can say I've been using this thing as my primary OS since DP4, and I never came back to ML.

The only thing I miss so far: Perian

Sure I can use VLC or MPlayerX to play multiple video files, but I miss not having access to the "Quicklook" features (no thumbnails in particular).

Wait.... Are you saying Quicklook is not in Mavericks? Eg. You can't hit the space key to preview files, videos, images etc?
 
Wait.... Are you saying Quicklook is not in Mavericks? Eg. You can't hit the space key to preview files, videos, images etc?

No he's saying the plugin PERIAN which gives quicktime and by extension QUICKLOOK the ability to play and read metadata from a lot more video extensions (avi, mkv, flv, etc...) is broken and that he misses the features it provided.
 
Wait.... Are you saying Quicklook is not in Mavericks? Eg. You can't hit the space key to preview files, videos, images etc?

w0lf explained very well what I wanted to say (English is not my primary language, I'm learning) ;)

Perian is a package of multiple codecs that gives Quicktime (and Quicklook) a way to read video files formats that are not natively supported by OS X. For example, video thumbnails in the Finder for DivX/XviD video files. :p You can still read these videos in VLC or MPlayerX, and still use Quicklook with many files, but not with video files Perian supported.

Perian isn't developed anymore and Mavericks broke the last existing version or Perian. And to be honest, OS X doesn't support many video codecs natively.
 
Agree, they need to bring the spinner back. Nice to know at a glance.

Installed it over my main OS. All my apps are working as expected :)
Its been bug-free so far. Only thing that irks me is that the Time Machine menubar icon doesn't spin when backing up :)
 
For you guys (and gals) running Mavericks on a daily basis, have they implemented basic features like spinning down hard disks when putting the computer to sleep? I would just imagine small features like that would wait until the final release and I wouldn't be able to live with the fan noise when my computer is not in use!
 
Going to have to say no. Too many issues with games, iTunes, Safari, Aperture, breaking Perian to recommend upgrading right now.

To be quite honest it's not much of a difference in day to day use from even LION to Mavericks. I use Lion at work and Mavericks at home and there's very few things I actually miss at work (iCloud tabs mainly).
 
I just reinstalled DP7 last night and migrated everything from my user account in 10.8 via a TM backup and restored all my apps, docs, libraries, settings etc... it took the better part of 4 hours to complete, but that included the DP point updates (between DP4, then 5, 6 and 7) which obviously won't be the case when GM goes live. The migration itself took about 3 hours in my case.

It's been running surprisingly smooth with all my stuff back in. All my apps (except for XBMC) are running fine and all licenses and settings transferred over perfectly.

This was to be my final (big) test evaluating 10.9 and so far it's smooth sailing. I'll have to run this in a production setting for at least a week before deciding on whether to do a day-one install but it looks promising so far.

I suggest to anyone who wants to really test 10.9 to clean install DP4, migrate over all their stuff during the initial setup and then update to DP7. Only then will you know if it's good enough for your use on day one or not.
 
Can someone shed any light on how Safari runs in Mavericks? Does it's process 'Safari Web Content' still consume huge amounts of memory and slow your machine to a crawl? I'm hoping the memory-management in Mavericks has fixed it.

I'm testing Safari beta 6.1 in ML and the same memory issues are still present. :(
 
Can someone shed any light on how Safari runs in Mavericks? Does it's process 'Safari Web Content' still consume huge amounts of memory and slow your machine to a crawl? I'm hoping the memory-management in Mavericks has fixed it.

I'm testing Safari beta 6.1 in ML and the same memory issues are still present. :(

Hard to be sure.

Just checked, it's now multiple processes.
 
dp7 feels pretty solid, I bet it's the GM version. dp6 still sucked with huge bugs...

Don't you think there is a lot more to come? End of October is still a long way to go. I still hope for some UI changes like the iCloud beta page.
 
Oh my god. Everything is white and buttons are without borders.
I can't even see where windows overlap. And the animations are sooo slooow.
How can I get the Start Menu back?
 
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