I had this problem after doing a fresh installation of Gutsy and then running "aptititude dist-upgrade" with a local copy of the Ubuntu repository.
To resolve it, I uninstalled ubuntu-desktop (and everything that it automatically pulls in) and then re-installed it. I got some errors (related to dbus or udev?) about power-manager settings but those are gone now. -- Can't log in after upgrading https://bugs.launchpad.net/bugs/136529 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs