Thanks for your bugreport. This looks very much like a dbus problem. This code worked fine in older versions.
Or did the update you did include gnome-power-manager and/or dbus? Thanks, Michael ** Also affects: dbus-python (Ubuntu) Importance: Undecided Status: Unconfirmed -- [apport] update-manager crashed with DBusException in __call__()" https://launchpad.net/bugs/86572 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs