Restarting the all dbus init scripts during a gnome session, could stop support for some working service (like avahi in your case). The minimal should be to restart hal : sudo /etc/dbus-1/events.d/20hal restart The best is to simply restart gnome.
-- failed to initialize HAL : gdm init script priority should be at least equal to dbus one https://launchpad.net/bugs/81670 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
