I have the same error and will attach my bugreport.
** Attachment added: "Crashreport from nx9420" http://librarian.launchpad.net/7042448/_usr_bin_Xgl.1000.crash -- Xgl crashed when using Blender https://launchpad.net/bugs/94116 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
