I agree with Adam. Please make sure you have the most recent linux-restricted-modules- generic and nvidia-glx packages installed.
** Changed in: linux-restricted-modules-2.6.17 (Ubuntu) Status: Needs Info => Fix Released -- Graphic Acceleration dont work https://launchpad.net/bugs/63627 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs