I am confirming this bug because it seems similar enough to mine and I have gotten the same results. I too have the same problems even after installing the drivers from nvidia. I would like to note that this did not occur in feisty until one patch came out, then everything stopped working. I believe it was around the time when the 2.6.20-5 kernel was out.
** Changed in: linux-restricted-modules-2.6.20 (Ubuntu) Status: Unconfirmed => Confirmed -- In Feisty Fawn, nvidia-glx 1.0.9xxx causes graphical glitches, artifacts and random system crashes https://launchpad.net/bugs/85449 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs