The last update was made in order to let gnome-session ask g-p-m to perform power actions instead of GDM (and ask whether these actions are available). gnome-session will very soon depend on g-p-m, which should solve the problem.
-- g-session logout dialogue breaks if g-p-m not installed https://launchpad.net/bugs/44514 -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
