is the crash dialog you get about policykit every time? that's likely a crash on session closing that you see on next login because the apport dialog is displayed, we turn apport off in stable version so it shouldn't be any issue there
** Changed in: gdm (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in Ubuntu. https://bugs.launchpad.net/bugs/721142 Title: System program problem detected -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs