IMac freezing permanently (requires hard reset)

My parent's iMac has been freezing on them recently, after a fresh install of Snow Leopard.   It locks up, the beachball of death appears, and only a hard reset will get the computer running again.
I checked the kernal.log file and this is what I see for the time period of the freeze:
Jun 23 13:23:39 iMac kernel[0]: ** Device in slot: SLOT--1 **
Jun 23 13:23:39 iMac kernel[0]: ** GPU Debug Info Start **
Jun 23 13:23:39 iMac kernel[0]: 0x000094c8
Jun 23 13:23:39 iMac kernel[0]: 0x000000d6
Jun 23 13:23:39 iMac kernel[0]: 0x00000001
Jun 23 13:23:39 iMac kernel[0]: 0x00000018
Jun 23 13:23:39 iMac kernel[0]: 0x00009062
Jun 23 13:23:39 iMac kernel[0]: 0x00000001
Jun 23 13:23:39: --- last message repeated 1 time ---
Jun 23 13:23:39 iMac kernel[0]: 0x000094c8
Jun 23 13:23:39 iMac kernel[0]: 0x00000001
Jun 23 13:23:39 iMac kernel[0]: 0x00000015
Jun 23 13:23:39 iMac kernel[0]: 0x00000000
Jun 23 13:23:39 iMac kernel[0]: 0x00000001
Jun 23 13:23:39 iMac kernel[0]: 0x00000047
Jun 23 13:23:39 iMac kernel[0]: 0x00000000
Jun 23 13:24:24 iMac kernel[0]: 0x00002010
Jun 23 13:24:24 iMac kernel[0]: 0x00020000Jun 23 13:24:24 iMac kernel[0]: 0xc0034300
Jun 23 13:24:24 iMac kernel[0]: 0x88800000Jun 23 13:24:24 iMac kernel[0]: ** GPU Debug Info End **
Does anyone know what could be causing this and how I might fix it?
System Stats:
OsX 10.6.8
Model Name:          iMac
Model Identifier:          iMac7,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          4 MB
Memory:          2 GB
Bus Speed:          800 MHz
Boot ROM Version:          IM71.007A.B03
SMC Version (system):          1.20f4
Hardware UUID:          00000000-0000-1000-8000-001B63998AB7
ATI Radeon HD 2400 XT:
Chipset Model:          ATI,RadeonHD2400
Type:          GPU
Bus:          PCIe
PCIe Lane Width:          x16
VRAM (Total):          128 MB
Vendor:          ATI (0x1002)
Device ID:          0x94c8
Revision ID:          0x0000
ROM Revision:          113-B2250A-207
EFI Driver Version:          01.00.207
Intel ICH8-M AHCI:
Vendor:          Intel
Product:          ICH8-M AHCI
Link Speed:          3 Gigabit
Negotiated Link Speed:          3 Gigabit
Description:          AHCI Version 1.10 Supported
ST3250820AS Q:
Capacity:          250.06 GB (250,059,350,016 bytes)
Model:          ST3250820AS Q
Revision:          3.BQE
Serial Number:                      5QE42VFT
Native Command Queuing:          Yes
Queue Depth:          32
Removable Media:          No
Detachable Drive:          No
BSD Name:          disk0
Medium Type:          Rotational
Partition Map Type:          GPT (GUID Partition Table)
S.M.A.R.T. status:          Verified
Volumes:
Capacity:          209.7 MB (209,715,200 bytes)
Writable:          Yes
BSD Name:          disk0s1
Macintosh HD:
Capacity:          249.72 GB (249,715,376,128 bytes)
Available:          204.56 GB (204,558,282,752 bytes)
Writable:          Yes
File System:          Journaled HFS+
BSD Name:          disk0s2
Mount Point:          /

I ran the Extended Hardware Test 3 times, but there were no errors. Any other ideas? I'm coming up with squat while researching.
Edit: Apparently some people are reporting kernel error with Flash crashes. Has anyone experienced this? I updated their computer to the current version of Flash to see if this clears the problem up.

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ACE module hung and required hard reset !!Plz help

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Usually in the case of the bit flip the ace will reset itself, which clears the problem. In order to understand what is happining to your ACE, you would have to open a TAC case, and provide show tech information, as well as any files that were generated in the "core:" directory. You can view these using the command "dir core:"
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First off, my son and I both have the same phone and software versions and apps. He does NOT get email on his phone because he does not want to. I do. His phone has NEVER rebooted. Mine has done so numerous times. My business partner also has the identical phone and software version, lives within 200 yards of me, and uses the email and has had numerous reboots and has gotten them even sooner than I saw them at first. My partner and I have set up email attachments and downloads to go to the SD card. So much for background info. Here is what I did to fix the problem followed by some other observations:
Open up the case of the phone and remove the battery
Remove the SD card from the phone.
Put it into an adapter that allows you to access files directly on your computer. In my case this was a Windows PC running Windows 7.
Mount the SD card in your computer and open up the browser to see the files on the SD card.
Look for a folder called ".Mail"
If your phone is like mine you will see hundreds of files, some of zero length. This was even though I had deleted most of the emails I received on my phone.
Proceed to directly delete any of the zero length files. For that matter, you may have other files like jpg's laying around of uncertain origin. I got rid of these and other strange files that seemed attached to no documents at all.
Remove the SD card and reinsert into your phone. Put the battery back in and the cover on then restart the phone. Your phone should run properly and you should not see any negative consequences from the files you deleted previously.
Some other observations relevant to this solution that bolsters my theory that this problem has something to do with the email application and also a problem with file system corruption on the SD card as a consequence of it.
I had previously seen the email application put some mail from a different account I was using into my main account. The files could not be deleted and even trying to do so would cause the mail app to force close.
My son has never seen the problem despite being in the same environment with the same phone and software. Relevant difference to me was that he was NOT using email and I was.
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These issues seem to coincide with a rapid rise in network traffic most likely because of the iPad 2/iPhone support by Verizon. I wonder if this additional traffic load on the network is opening up timing holes in the software because of backoff and retry intervals for certain apps. Once again I suspect the email app especially because it is vulnerable to network traffic issues as it tries to get email account updates.
I could be wrong about my theory as to why the problem is happening. My solution seems to work. As far as pulling the battery and putting it near your AC in the car, that did NOT work for me at all. Leaving the phone out of its protective case also had no effect. Only screwing with the files on the SD card mattered.
I hope this helps.

This problem has been seen for MONTHS now by people besides myself. My business partner is about to put a bullet in his phone because this has been happening for far longer than mine. I have little confidence in a fix anytime soon because this problem has been persistent for some time and there is a lot of denial in the field by Verizon. Verizon has to depend on HTC and Google besides themselves for fixes. How much would you like to wager on how this business relationship is working out? The first step in any solution is for a company to take some responsibility for it and so far no company has.

I have had FF 6.0.2 crash my PC (blackscreen, pc is frozen and unresponsive, requires hard reset) several times in the last two weeks. Ironically, it did this very thing while I was registering in order to ask about this.

I also have had FF close and reopen with the little pop-up about restoring or starting a new session.
I have been using FF since v1, and never have I experienced this issue.
I do not know what other information to provide, but if anyone is willing to help, I will provide any necessary details.

Having disabled hardware acceleration (Tools>Options>Advanced>Browsing), I have not had a crash although it has only been two days.
Hopefully this fixes it and it will work for the others who are having the problem.

Re: msi 980 ti freezing issue, after hard reset no more freezing

can you test the video card in another computer to isolate the issue
and about VGA drivers version that you've tried, you didn't answer this

Oki, i didn't see: OS: Windows 10
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IPod Nano 4th Gen is stuck in a cycle of freezing; hard resetting only results in another instantaneous freeze.

Hey, guys,
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