I have the same issue here after upgrading to 11.04. A workmate of mine installed a fresh copy on identical hardware and does experience the issue, issue could be upgrade related. It's diffidently related to VT switching. If I switch terminals, the issue occurs (ctrl-alt-f1). HP EliteBook 8540p
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/767927 Title: Logout Freeze [kernel tried to execute NX-protected page - exploit attempt? (uid: 0)] -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs