From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050922 Fedora/1.0.7-1.1.fc4 Firefox/1.0.7

Description of problem:
When running Firefox, the screen will occassionally experience massive corruption. The corruption is easiest to trigger with Firefox, but it has happened with other programs as well. Switching to VT1 and then back to VT7 will clear the corruption.

I suspect this is related to the known nv corruption problem with Geforce 6 chipsets - my chipset is probably not blacklisted until the problem is fixed.

/sbin/lspci output for graphics card:

01:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6600] (rev a2) (prog-if 00 [VGA])
        Subsystem: ASUSTeK Computer Inc.: Unknown device 8199
        Flags: bus master, fast devsel, latency 0, IRQ 3
        Memory at c8000000 (32-bit, non-prefetchable) [size=64M]
        Memory at c0000000 (64-bit, prefetchable) [size=128M]
        Memory at cc000000 (64-bit, non-prefetchable) [size=16M]
        [virtual] Expansion ROM at cd000000 [disabled] [size=128K]


Version-Release number of selected component (if applicable):
fonts-xorg-base-6.8.2-1

How reproducible:
Sometimes

Steps to Reproduce:
1. Start up X
2. Start up Firefox
3. Push the system, display lots of complex page renderings, eventually (usually) - massive screen corruption
  

Actual Results:  Massive screen corruption.

Expected Results:  No screen corruption

Additional info:

See above.