Mountain Lion has random freezes. The mouse still works but the graphics go glitchy and i can't click on anything. I have to hold the power to restart.

I'm going to follow up on my post from a while ago. My basic thoughts are this: it's something to do with sleep. It only seems to occur after I've let my MBP go to sleep. When plugged in, I don't let it go to sleep. When on battery, I have it set at something like 10 minutes. But, I no longer close my lid and let it sleep. It's been quite a while now since I last experienced it. I had noticed that when I had experienced, I was usually recovering from closing the lid on it. Since I stopped doing that, no issues at all. To my recollection, every time this issue occurred, it was some period in time AFTER the MBP had come out of sleep mode (the time varies).

Same to me.. Always after the MBP had come out of sleep mode.

I had similar issue of sudden screen flashing followed by glitchy video . The only workaroud was to restart the macbook ( 5,1).

The root cause in my case was faulty RAM.

I had upgraded my macbook from 2 GB to 8 GB kit ( two 4 GB modules). I was able to boot up fine and the system recognised both the modules. However the machine use to freeze during heavy usage.

To test the RAM, I tried to start the macbook with just one of the modules installed. With one of the modules , I was not able to boot. With the other -- boot went fine... and there are no more freezes.

Hope this helps in some of the cases.

I only use Safari and am having these exact same problems.

I tend to be okay, with no freezes but if I attempt to use an external monitor I can gurantee that I will get a few crashes within the next hour or less. The whole external monitor only (so far) has come about since 10.8.2.

I have switched back to Chrome (which I thought might be the culprit) since upgrading to 10.8.2 and have gone several days without a crash now.

well, i wrote here before, and i said that a Chrome was my problem.

but after a long time i got a freeze again, and Chrome was running, so i dont know where is the problem (((

i got a freeze on 10.8.2 already, maybe i have to reinstall a Chrome again becouse of new update 10.8.2, well i try to reinstall Chrome and see what happen again

Thanks for everyone's help. I only just saw the advice to remove Soundflower. I upgraded to 10.8.2 on my MBP mid 2009 and I have had 4 days with no crashes and with many sleeps and no reboots. I didn't uninstall AirParrot or Soundflower and have the same versions as before. But I have been closing AirParrot when I wasn't using it so that may be helping.

My fix of the external monitor being my problem fell apart. I had not had a crash without it in a long while since 10.8.2 but have had 2 video lockup/freezes so far today alone.

According to Apple my hardware is just fine, they even ran the specific 2010 test and it came up fine. So the best we can hope for is 10.8.3 at this point.

How many of you are utilizing Crucial M4 SSDs? That's what my problem turned out to be. Check your firmware versions, if it's not current, there stands a good chance the drive is causing issues.

Yes - good point. I think I've only ever had the crash while plugged into an external monitor via my Cablesson mini-displayPort to HDMI cable.

Another possible relevance - my machine was running very hot so I recently opened it up and cleaned out /a lot/ of dust stuck in the fans and vacuumed out the little heat sinks. This cooled everything down, and I didn't have any crashes until 10.8 but perhaps I knocked a cable or something.... (I think this is unlikely since the crashes happen when the machine is lying flat on my desk).

I have the standard Apple SSD that came in the machine in early 2009.

I have the same issues after updating to mountain lion. Just had the harddisk renewed couple of months ago so that cannot be the problem. System just starts freezing up, it starts with one random application. After that if I click on another application like enter a new URL in safari or opening another email in sparrow it will freeze too. Then I try to force close applications with the force quit window in finder, which makes finder crash. Only thing that works is completely depower machine and reboot. Freezes up about every two days. Thanks for looking at this, here's my log:

Hardware Information:

iMac - model: iMac10,1

1 3.06 GHz Intel Core 2 Duo CPU: 2 cores

12 GB RAM

Startup Items:

CiscoVPN - Path: /System/Library/StartupItems/CiscoVPN

EyeConnect - Path: /Library/StartupItems/EyeConnect

HP IO - Path: /Library/StartupItems/HP IO

HPlaserjet Trap Monitor - Path: /Library/StartupItems/HPlaserjet Trap Monitor

System Software:

OS X 10.8.2 (12C60) - Uptime: 0 days 0:21

Disk Information:

ST31000528ASQ disk0 : (1 TB)

disk0s1 (disk0s1) <not mounted>: 209,7 MB

Macintosh HD (disk0s2) /: 999,35 GB (789,77 GB free)

Recovery HD (disk0s3) <not mounted>: 650 MB

HL-DT-ST DVDRW GA11N

USB Information:

Apple Inc. Built-in iSight

Apple Internal Memory Card Reader

Apple Computer, Inc. IR Receiver

Apple Inc. BRCM2046 Hub

Apple Inc. Bluetooth USB Host Controller

FireWire Information:

Kernel Extensions:

at.obdev.nke.LittleSnitch Version: 3876

com.Cycling74.driver.Soundflower Version: 1.5.1

com.vara.driver.VaraAudio Version: 1.0.3

Problem System Launch Daemons:

[failed] com.apple.xprotectupdater.plist

Problem System Launch Agents:

[failed] com.apple.afpstat.plist

Launch Daemons:

[loaded] at.obdev.littlesnitchd.plist

[loaded] com.adobe.fpsaud.plist

[loaded] com.freemacsoft.appcleanerd.plist

[loaded] com.microsoft.office.licensing.helper.plist

[loaded] com.sharpcast.xfsmond.plist

[not loaded] com.sickbeard.sickbeard.plist

Launch Agents:

[loaded] at.obdev.LittleSnitchUIAgent.plist

[not loaded] com.adobe.AAM.Updater-1.0.plist

[loaded] com.adobe.CS5ServiceManager.plist

[loaded] net.culater.SIMBL.Agent.plist

User Launch Agents:

[loaded] com.adobe.ARM.c854900b90925d7e34fd9113b03d70ea238104742a94b78f8dab160b.plist

[loaded] com.adobe.ARM.e9edf7bf2079e83e0084e2b08d67d4e0b76ab415e01136a06ec170f1.plist

[loaded] com.macpaw.CleanMyMac.volumeWatcher.plist

[loaded] com.netputing.airprintactivator.plist

[loaded] com.plexapp.helper.plist

[loaded] com.spotify.webhelper.plist

User Login Items:

PhotoSync

Sparrow

Caffeine

SABnzbd+

AppCleaner Helper

Data

SugarSync Manager

CouchPotato

Plex Media Server

3rd Party Preference Panes:

Flash Player

Perian

Internet Plug-ins:

AdobePDFViewer.plugin

Becon.plugin

Flash Player.plugin

FlashPlayer-10.6.plugin

Google Earth Web Plug-in.plugin

iPhotoPhotocast.plugin

JavaAppletPlugin.plugin

NP2020Player.plugin

QuickTime Plugin.plugin

SharePointBrowserPlugin.plugin

Silverlight.plugin

User Internet Plug-ins:

fbplugin_1_0_3.plugin

Bad Fonts:

None

Top Processes:

I'm starting to suspect SoundFlower. So maybe try completely removing that? Mine was installed for AirParrot and since i've removed AirParrot from the startup items I am down to one crash every 10 days or so (from about twice per day)

Thanks for the reply. Can you tell me how to remove the kernel extensions for soundflower? Have been looking on google but unable to find any good instructions. Thanks again.

i suspect the Intel HD Graphics 3000 512 MB

do you have one of these inside?