It happens to me again today. Still on maverick. I found out that probably it happens only if acceleration (compiz) is on. Attaching ubuntu-bug xorg
** Attachment added: "result file from ubuntu-bug xorg" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/740785/+attachment/2108392/+files/ubuntu-bug-xorg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/740785 Title: Caught signal 11 (Segmentation fault). Server aborting -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs