I've had same problem. Running Ubuntu 9.04, policykit 0.9-2ubuntu1, dbus 1.2.12-0ubuntu2.1
Ubuntu was installed as guest system in VirtualBox, then transfered to a real-world machine, leaving VirtualBox add-on kernel modules installed. Because of missing VirtualBox host system, addon kernel modules didn't start on boot, resulting in no creation of home folder for vboxadd user. This triger error 'Unable to lookup session information for process' on system tools authentication. Solution: Delete vboxadd user if you don't need it anymore or add /nonexistent for homedir as suggested in https://bugs.launchpad.net/bugs/232278 Note that users with missing homedir, will also triger dbus error when Nautilus try to automount NTFS partition. -- Unlock button throws an error, doesn't authenticate https://bugs.launchpad.net/bugs/187335 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
