I experience this bug too. Here is the output requested. The second command doesn't give any output for me over VNC or SSH.
[EMAIL PROTECTED]:~$ ck-list-sessions Session2: uid = '1002' realname = 'Meadows user account' seat = 'Seat1' session-type = '' active = TRUE x11-display = ':0' x11-display-device = '/dev/tty7' display-device = '' remote-host-name = '' is-local = TRUE on-since = '2008-06-23T19:03:02Z' idle-since-hint = '2008-06-23T19:16:21Z' Session1: uid = '1000' realname = 'David Radin' seat = 'Seat2' session-type = '' active = TRUE x11-display = '' x11-display-device = '' display-device = '/dev/pts/0' remote-host-name = 'adsl-69-209-239-109.dsl.chcgil.ameritech.net' is-local = FALSE on-since = '2008-06-23T18:48:08Z' Session3: uid = '1000' realname = 'David Radin' seat = 'Seat3' session-type = '' active = FALSE x11-display = '127.0.0.1:50' x11-display-device = '' display-device = '' remote-host-name = '127.0.0.1' is-local = FALSE on-since = '2008-06-23T19:12:42Z' -- policykit not available over Vnc sessions https://bugs.launchpad.net/bugs/238799 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