This crash file's made by Gnome for me, I hope it'll help. (Note: during I'm writing this report Xgl crashed two times. :-( )
** Attachment added: "Gnome crash file" http://librarian.launchpad.net/5110635/_usr_bin_Xgl.1000.crash -- Garbage on screen then crash https://launchpad.net/bugs/72420 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
