Entire computer freezes when moving a terminal

Hi,

I am using a fresh Ubuntu installation with Compiz turned off. About twice a day the entire system freezes right after I drag a terminal window around on the desktop. The computer then responds to pings, but cannot be logged into using ssh. Nothing was left in the system log files either. So, it seems that this has to be some kind of bug in the fglrx kernel module, or at least in the way it is access by the fglrx driver.

To reproduce, grab the title bar of a gnome-terminal window, and wave the window around. The redrawing is a bit jerky, and can sometimes cause the bug described here.

-BenRI

ProblemType: Bug
Architecture: amd64
Date: Wed Nov 25 11:06:26 2009
DistroRelease: Ubuntu 10.04
MachineType: LENOVO 2767WYA
NonfreeKernelModules: fglrx
Package: xorg 1:7.4+3ubuntu9
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-4-generic root=UUID=1f0bd46c-d880-446f-affc-1ecbf92d9b8e ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-4.5-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu9
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xorg
Symptom: display
Tags: freeze
Title: Xorg freeze
Uname: Linux 2.6.32-4-generic x86_64
dmi.bios.date: 10/13/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET79WW (3.09 )
dmi.board.name: 2767WYA
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7UET79WW(3.09):bd10/13/2009:svnLENOVO:pn2767WYA:pvrThinkPadT400:rvnLENOVO:rn2767WYA:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2767WYA
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO
system:
 distro: Ubuntu
 architecture: x86_64kernel: 2.6.32-4-generic