This is due to a know gconf problem. For the moment you need to restart the gnome-settings-daemon when you are in this situation (killall gnome-settings-daemon or restart GNOME).
This bug has been marked as a duplicate of bug 8077.
This is due to a know gconf problem. For the moment you need to restart the daemon daemon or restart GNOME).
gnome-settings-
when you are in this situation (killall gnome-settings-
This bug has been marked as a duplicate of bug 8077.