I noticed the same behaviour some times ago. I partially solved this by completely disabling AGPGART kernel support. Could you please try if it works for you too? Obviously, that wasn't the right way to handle this. I'm going to do further researches on it and file a new bug in GNOME, if needed.
-- Gnome 2.16 crashes after loading some apps https://launchpad.net/bugs/65971 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
