Comment 8 for bug 152648

Basilio - I was just about to respond to say that I haven't seen this bug for a while on Gutsy, and I that I hadn't seen it at all on Hardy- but it just happened on Hardy beta for the first time. My girlfriend logged in first, then I switched user using fast-user-switch (which is set to leave screen unlocked), then several minutes later - her Xorg dies on screen :0, causing GDM to restart and a login screen to reappear. I then logged in, and returned to my session where I left off before I was rudely interrupted by the crash.

Some info:

chr1s@chris-desktop:~$ lsb_release -rd
Description: Ubuntu hardy (development branch)
Release: 8.04
chr1s@chris-desktop:~$ apt-cache policy linux-restricted-modules
linux-restricted-modules:
  Installed: (none)
  Candidate: 2.6.24.12.13
  Version table:
     2.6.24.12.13 0
        500 http://archive.ubuntu.com hardy/restricted Packages
chr1s@chris-desktop:~$ apt-cache policy nvidia-glx-new
nvidia-glx-new:
  Installed: 169.12+2.6.24.11-12.31
  Candidate: 169.12+2.6.24.11-12.31
  Version table:
 *** 169.12+2.6.24.11-12.31 0
        500 http://archive.ubuntu.com hardy/restricted Packages
        100 /var/lib/dpkg/status
chr1s@chris-desktop:~$ apt-cache policy xserver-xorg
xserver-xorg:
  Installed: 1:7.3+10ubuntu7
  Candidate: 1:7.3+10ubuntu7
  Version table:
 *** 1:7.3+10ubuntu7 0
        500 http://archive.ubuntu.com hardy/main Packages
        100 /var/lib/dpkg/status
chr1s@chris-desktop:~$

Also attached is the Xorg log