I have the same problem. Somehow dbus isn't responding anymore. Trying to start any program from the Gnome menu's doesn't work, as they can't connect to dbus.
-- Sometimes DBus fails to reload after resuming from suspend-to-RAM https://launchpad.net/bugs/27638 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
