I have encountered a crash with symptoms matching this one, while running from the 10.04 32-bit live CD.
After starting the live CD, a message displayed suggesting I could install the proprietary nvidia drivers, which I agreed to, selecting the recommended (latest) version - but when it asked me to reboot I realised that while using a live-cd (presumably without persistent storage) rebooting would not in fact cause those drivers to be loaded. Instead, I left the computer running without having rebooted. I left the computer running in this state; when I returned to it later, apport informed me of a crash. I submitted the report and thought no more about it. Later, I left the computer again, and returned to find the same error message displayed. I have attached the apport report. The computer I was doing this on was an NEC WA2510 with specification including 2 AMD Opteron 2218 2.6GHz processors and an nVidia Quadro FX 560 video card running two CRT monitors. ** Attachment added: "Crash report log file" http://launchpadlibrarian.net/50139901/_usr_lib_gnome-screensaver_gnome-screensaver-gl-helper.999.crash -- gnome-screensaver-gl-helper crashed with SIGSEGV in exit() https://bugs.launchpad.net/bugs/545397 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs