Created attachment 375866 [details]
X log

Description of problem:
Multiple times a day, my screen will freeze.  Mouse cursor still moves.  Keyboard does not respond.  Can't switch to another VC.  If I ssh in to the box I can see that Xorg is pegging the CPU.  In the logs I see an error

  [mi] EQ overflowing. The server is probably stuck in an infinite loop.

followed by a backtrace.  I will attach the Xorg.0.log.  Choosing evdev as the component based on the backtrace.  I would not be surprised if it is the wrong component. 

Version-Release number of selected component (if applicable):

xorg-x11-server-Xorg-1.7.1-7.fc12.i686
xorg-x11-drv-ati-6.13.0-0.10.20091006git457646d73.fc12.i686
xorg-x11-drv-evdev-2.3.0-1.fc12.i686

How reproducible:
This happens randomly two to three times a day.

Steps to Reproduce:
1.Log in to gnome
2.go about you normal business until the screen and keyboard stop responding
3.
  
Actual results:
Frozen screen and keyboard.  Movable mouse.

Expected results:
Screen, keyboard and mouse keep working

Additional info:

Using a Lenovo T500 in a dock with external monitor plugged in via DVI.  I can't remember if I have seen this bug when using the the LVDM only sans dock and external monitor.