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I swear my Mac has artificial intelligence. Everything i try works really well for about an hour and then its as if the computer works out what i'm doing and then breaks it permanently! When i try to replicate the fix it's as if the computer says "I'm not going to fall for that one again - you shall have crap connections for the rest of the day"

Paranoid? :(
 
This random disconnect/failure to connect issue is driving me nuts. I keep running into the following: Getting prompted to join my network, even though the keychain already has my network name and WPA password; getting disconnected for no apparent reason, even though my MBA is about 4 feet from my AirPort Extreme base station; "connection timeout" after about 3 seconds when trying to connect; and having to turn AirPort on my MBA on and off several times before it will connect. I've already tried adjusting virtually every network setting I can think of (I am not switching back to WEP), but only my MBA, with its Leopard 10.5.2, has issues connecting and staying connected to my wireless network; all of my other network devices, even 50 feet away, can connect to my AEBS and stay connected without any issues.

I just now added SystemUIServer and Apple80211Agent to both entries for my network in Keychain Access. Hopefully this will help.

Apple, if you're reading this: GET THIS FIXED NOW. You can't blame this issue on anyone else.
Well, adding those two apps to the keychain items for the network did not help.

Current test: I have deleted the following files:

com.apple.internetconfig.plist
com.apple.internetconfigpriv.plist

from my Library:preferences folder. Restarted MBA, fired up Safari, went into Preferences, and made a change. I am now connected to the network. Fingers crossed for it to stay that way.

EDIT: Nope, I am disconnected once again. %^^&$#$# networking...
 
I was having drop off problems with 10.5.1 but those were tolerable compared to my new problem.. Since upgrading to 10.5.2 I can't see or manually connect to my home access point. The weird part is, if I have the install disc in about to do a fresh install over 10.5.2 I can see it and connect to it just fine. Any guesses?
 
Is it by any chance possible that the dropouts might be related to the firewall? Do they happen with the firewall completely disabled?
 
i'm actually close to tears with my £1500 mac pro right now - i can't actually view a web page now without alt-clicking on the black bars (which somehow sort of resets the connection?)

It must be my router. I've tried EVERYTHING anyone has ever suggested and while they work for a little bit, the connection quickly drops back to nothing: Transmit rate=1

Now i've got a new ISP starting in a couple of weeks and they're sending me a free wireless router. I've had my d-Link DI-524 for about 2 years now and maybe it's not so good with leopard? I've got a Macbook and iBook both running tiger that have absolutely perfect connections 24/7 throughout my whole house.

Anyone know if the DI-524 router has issues with leopard (i've updated to the most recent firmware which was dated may 2007 - a good 4/5 months before leopard came out)

Hopefully i'll get this new router in the next couple of weeks (i think its a Speedtouch 780) which will hopefully be better with leopard.

Failing that i'm going to go and get an AEBS (though they seem a bit of a waste of money to me)
 
Well, adding those two apps to the keychain items for the network did not help.

Current test: I have deleted the following files:

com.apple.internetconfig.plist
com.apple.internetconfigpriv.plist

from my Library:preferences folder. Restarted MBA, fired up Safari, went into Preferences, and made a change. I am now connected to the network. Fingers crossed for it to stay that way.

EDIT: Nope, I am disconnected once again. %^^&$#$# networking...
I know I am jinxing myself here, but since this last edit last night, my MBA has not been disconnected from my wireless network even once.

So you might want to try the steps I wrote above and see if they help.

EDIT: Yep, I jinxed myself. Just got disconnected.
 
I had these problems before where my mac would say its connected but no webpages would load until i turned off airport and turned it back on. I replaced my router (dlink) and it worked fine after that and the problem never came back (knock on wood.)
 
I had these problems before where my mac would say its connected but no webpages would load until i turned off airport and turned it back on. I replaced my router (dlink) and it worked fine after that and the problem never came back (knock on wood.)

Yeah, but, this isn't a real solution. It's bailing wire and duct tape. What if you go on the road and the hotel uses God-knows-what or you take your rig to a friend's house and they have a different router? :mad:
 
what did you replace the dlink with?

I have a dlink dir-655 router at home that works fine now w/ the update(10.5.2). I have another Motorolla wireless router that caused my MacBook Pro to crawl but after the update it works fine.

I'm one of the lucky ones I guess.
 
Anyone know if the DI-524 router has issues with leopard (i've updated to the most recent firmware which was dated may 2007 - a good 4/5 months before leopard came out)

I have the D-Link DI-614+ and my problems seem to be identical to yours. My desktop PC and another windows based laptop run fine on my network, only my MBP with OSX 10.5.2 seems to have problems. Funny thing is, D-Link discontinued the model router I have back in '04, but their website said they conntinued to support it until March 1st, 2008. So I'm a few days late. I'll probably upgrade to the AEBS sometime soon. Hopefully this weekend.
 
I just want to go on record--exact same problems. I'm using an old netgear router, MRB14v2; I updated the firmware. Every other computer under the sun can connect to my network. The brand spanking new Mac Book cannot. It has OS X 10.5.2.

If I unplug the router, I can get it to connect for about 3 minutes, then it drops off and gets a self-assigned IP and then I can't get a connection again at all.

I've tried all the tricks--$ in front of password, opening up network so there's no password required (it still says there is a password required when there isn't), no firewall (it wasn't on anyway).

I'm sure this is a mac software problem. Please fix it, Apple!
 
This is just ridiculous, I'm starting to lose the enjoyment of using my mac :mad:

hopefully apple will acknowledge this problem, because this problem seems to be widespread judging from the amount of views this thread has had and the amount of threads in the apple support forums. apple sort it out!
 
Apple will not put a priority on fixing it until the news leaks to a major news channel. After all, fixing the transparency of the menu bar is more important than fixing wireless reception problems.

One way to attract attention is to return those laptops that are within the 14-day period. Another way is to return the retail Leopard copies. The goal is to let Apple know why you are trying to do so.
 
Hmm, how very strange. I have a fairly complex wireless/wired network at home, and I frequently deal with my school's network (which uses 802.1X authentication). No matter what I try, unless the network is physically down, it Just Works (tm). :D

As for the OP's situation, I'd look into the following things as causes:
Out of date firmware for networking hardware
Interference
Too many walls or other objects between the access point and the computer
 
Apple will not put a priority on fixing it until the news leaks to a major news channel. After all, fixing the transparency of the menu bar is more important than fixing wireless reception problems.

Are you being sarcastic?

All sarcasm on this subject will be greeted with stern :mad: by those of us with the problem ;)
 
I was having drop off problems with 10.5.1 but those were tolerable compared to my new problem.. Since upgrading to 10.5.2 I can't see or manually connect to my home access point. The weird part is, if I have the install disc in about to do a fresh install over 10.5.2 I can see it and connect to it just fine. Any guesses?

I posted a few times saying that I never had any wireless (connection drops off) before 10.5.2 nor after 10.5.2. It lasted almost 3 weeks. On my 3 weeks old Macbook, I started to get wireless issues last week.

I'm using a D-Link DIR-625 router. The router is located on the first floor in my house and I sometimes use the Macbook on the second floor. Until this week, I had strong signal all the time. It started one evening when I got very slow transfert rates (unusable connection). The day after, I was on the second floor again (at the same place) and I was not even able to see my network. What was very strange, I was detecting my neighbor's network but not mine. When I got back closer to the router downstairs, I got the signal back. Even though the router is downstairs, I have a very opened area house and the distance to the router from where I work upstairs is about 20-30 ft. So the distance and the walls are not an issue.

Decided to change the D-Link router for AEBS (I hate when things don't work), the AEBS is connecting with very strong signal with no problem at all anywhere in my house.

Here are the settings I had on the D-Link router :
Latest Firmware revision
Wireless channel : auto-scan (using channel 3)
802.11 mode : Mixed (n, g, b)
Channel width : Auto 20/40 MHZ
Transmission rate :Best (automatic)
Looking at the real transmission rate, it had the tendency to vary from 90 to 120
Network visibility status : Invisible
Security : WPA personal

Here are the settings on the AEBS
Channel : automatic (using channel 11)
802.11n mode (802.11 b/g compatible)
Multicast rate : 2 Mbps (don't know what it is)
Transmission rate :100% with interference robustness checked
Looking at the real transmission rate, it looks constant since yesterday at 130
Network visibility status : Invisible (closed network)
Security : WPA personal

Hope that helps
 
I just want to go on record--exact same problems. I'm using an old netgear router, MRB14v2; I updated the firmware. Every other computer under the sun can connect to my network. The brand spanking new Mac Book cannot. It has OS X 10.5.2.
If I unplug the router, I can get it to connect for about 3 minutes, then it drops off and gets a self-assigned IP and then I can't get a connection again at all.
I've tried all the tricks--$ in front of password, opening up network so there's no password required (it still says there is a password required when there isn't), no firewall (it wasn't on anyway).
I'm sure this is a mac software problem. Please fix it, Apple!
You have just described EXACTLY the same symptons that my iMac showed when it was returned to me after being repaired!!
Before it went off it worked fine, since it came back it displays the exact symptons above.
However, it was on 10.5.1
I upgraded to 10.5.2. and the problem remained.
I ended up sending my iMac back and getting a brand new replacement which I received today..it saw my Wireless network and connected straight away!!
I'm a bit nervous about upgrading to 10.5.2 though :-/
 
I havent read the whole thread so sorry if this has been said before, but I have a internet sharing problem on my iMac running Leopard with all the newest updates, the internet sharing will NOT work (wont show up on anything when I do a WiFi scan) unless a turn it on and off again, it does this almost all the time. Not a big deal, but still annoying, especially when someone else is trying to use the computer!
 
Wow I thought I was the only one with this problem.

My network always disconnects to "scan" although it's connected to my preferred network.. I can't count the amount of poker hands i've lost due to disconnection. I just got disconnected when dealt Pocket Queens :(
 
Wow I thought I was the only one with this problem.

My network always disconnects to "scan" although it's connected to my preferred network.. I can't count the amount of poker hands i've lost due to disconnection. I just got disconnected when dealt Pocket Queens :(

nothing to do with OS X wireless problems, thats someone telling you to stop gambling! :p - Listen to the signs
 
So, I've been thinking about contacting my ISP, since my broadband connection is kinda sucky. I've got a 8/2 connection, but having problems getting much more than 2/0.5.

I'm running three machines (iBook, MacBook, iMac) with 10.5.2 over an AEBS running 7.2 (7.2.1 just blows).

Buuut, not wanting to be a complete idiot, I ran a connection from the MacBook to the AEBS with a standard 10/100 ethernet cable.

WTF!!! 7.8/1.9.....!! Oookay, do all the stuff that has been talked about here and the apple support forums. Even stupidly 'upgraded' to 7.2.1 (quickly reversed that. Bad move).

End result? No way can I get the speed up. I've tried all the different suggestions, both on the AEBS side, as well as keychain deletion, plist mangling etc, etc, etc. Also, screen sharing is sucky as well.

Apple, this just plain blows. And what pisses me off even more, is that I tested the connection on a friends Time Machine.... 7.7/1.5. Soooo..... when are we AEBS owners going to get the 7.3 update... huh?

Sorry about the rant, but I've had enough. I'll use the old AE until something changes.:mad:
 
How far are you from the router?

Last weekend I was having similar problems to everyone else. After 5 hours of plugging and unplugging, changing routers and getting to know Keychain a lot better, no improvements at all. Ironincally, my iBook G4 still running Tiger had no issues during any of the changes I made.

I could connect to my network from a different Mac (on an previous OS) and access my neighbors network with my iMac fresh after Leopard...it just wasn't making sense at all.

Needless to say, I decided that all hope was lost and was just going to just try to deal with this and suffer until Apple puts out a software patch.

So I made better use of my time rearranging the house, moving the iMac from it's former home in my bedroom to my office where my Airport Express was located.

Fired the iMac up and Airport connected to a network nice and easy. I thought it was my neighbor's for sure, but I checked just to humor myself. Lo and behold it was showing my network with a full transfer rate of 54! I couldn't believe it, so I restarted several times just to make sure it wasn't some random fluke trying to mess with me (I was ready to believe anything at this point). Each time it flawlessly connected; no time outs, no passwords and it *REMEMBERED* my network.

The only thing that I changed was where the computer was physically located. It went from being about 40 feet away to 4 feet away from the router itself.

Hopefully I'm not just lucky and it works for somebody else.
 
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