what version of gnome-system-tools is installed? just update the package using update-manager (or the "updates" systray icon). No need to use a zillion of "?" it will only bother people and they will not reply to your comment
what version of gnome-system-tools is installed? just update the package using update-manager (or the "updates" systray icon). No need to use a zillion of "?" it will only bother people and they will not reply to your comment