Wifi freezes Mountain Lion (especially with Safari it seems)

I seem to have this problem when my macbook pro (7,1) is put to sleep and then tries to reconnect to wifi on start up. Im using firefox too and not safari. but same symptoms, right side of top task bar (time, battery monitor, spotlight, etc) becomes unresponsive while trying to reconnect to the wifi. The only way i can resolve is by rebooting my MBP.

All other open apps seem to be responsive. However, when trying to go into network preferences via system preferences, this also freezes and becomes unresponsive. and has to be force quit.

I am not having problems connecting to WiFi, but the top right side of my screen is frozen. I have to restart to get everthing back to normal.

I have this exact problem and symptoms (as DiggsMc). I'm working through every program trying to figure out what is causing it, but no success so far. I've been using Chrome, which shows a lot of errors in Console, and Mail and Calendar become non-responsive as well. I can still terminate programs and shut down, but cannot access Network preferences to try to reconnect.

Note that it doesn't lock everytime it sleeps, but only sometimes. The console logs show some forced sleep with certain programs due to repeated errors, which I believe are just symptoms of the root problem, but I haven't tracked that down yet.

Just wanted to report. Anyone else having these problems? Any ideas out there?

I've got the same problem on a MacBookPro 8,2. I've reset the SMC and that hasn't helped - only rebooting solves the problem.

Just now i woke my MBP from sleep and its started up without wifi freezing... The only thing ive done differently is waited a while (unintentionally) before signing in/unlocking on wake, and the wifi had reconnected before i signed back in/unlocked my machine.

The only apps i have on my machine that i think could be possible causes of the problem could be:

SugarSync, Coda 2, Transmit.

Youre right about mail and calendar becoming nonresponsive too.

I also have Transmit.. leaving it off for a while to see if that makes a difference. I was also suspicious of IStat Menus, since that section of the menu bar was beachballing.

Quitting Transmit (menu bar as well) seems to have worked for me as well.

Same for me. When laptop wakes from sleep it goes looking for my WiFi network and hangs. All net-related apps also become non responsive and only solution is to hard restart the Mac.

Exact same for me on my 6.1 Macbook Pro.

I have Transmit installed but I'm suspecting either iStat Menus (3.24) or Little Snitch (3.0). Has anyone with the same problem iStat or LS not installed?

I dont have iStat or Little Snitch installed. I think the issue must be with Transmit. However i also have transmit on my iMac and that doesnt seem to be affected, so may just be a problem with Mountain Lion & Transmit when installed on MacBook Pros..

OK, for reference, I quit the Transmit Menu item and haven't had freezing problems since.

I don't have iStat, but do have Little Snitch v2.5.3

I have Transmit, Lil Snitch and iStat Menus installed. But I did not open Transmit since rebooting yesterday and this morning when I woke up my Mac I did not have the lockup issue, so I think the evidence is pointing to Transmit. My Macbook Pro is model 8,2 (in case it matters to someone out there).

Does this scenario fit everyone whose reporting this issue?

1) Mountain Lion is the OS.

2) Transmit is running.

3) Mac goes to sleep.

4) On waking, Mac tries to connect to network, fails, then the top right section of the menu bar beachballs when you roll over it.

5) Mail and Calendar both lock up (due to network failure)

6) Opening System Preferences locks up when trying to open Network.

7) Only restarting will resolve the issue.

That's what's going on over here...

@TwoCoke - I use AppCleaner to remove programs that don't have uninstallers (and sometimes those that do), but I don't think you need to uninstall it to avoid the problem - just don't leave it running when your machine sleeps. I've not noticed the lockup except for when it's waking and tries to reconnect to the network. I'm going to run some more tests today because I use Transmit almost every day.