Are you using the proprietary nvidia driver? If so please try if you can reproduce this bug using the open source river nv or the vesa driver.
If yes, please mark this bug as a duplicate. -- X crashes while showing the "Downloading changes..." dialog of the linux-image-2.6.15-26-k7 https://launchpad.net/bugs/52668 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
