I have this bug with my desktop, but I don't have ATI card. I have an GeForce FX5200 and I use the nvidia-glx driver. It doesn't crash all the time, it's random.
-- Lockup problems with both the free xorg ATI driver and the proprietary fglrx driver, using various ATI cards https://launchpad.net/bugs/30447 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
