annoying icons in the notification area

view full story

http://www.linuxforums.org – I used "gksudo -u gdm dbus-launch gnome-appearance-properties" to change the gdm properties, and now an annoying Universal Access icon keeps appearing, and I can't remove it. I don't need the custom configuration anymore and would like to set it back to default. How do I do that? (HowTos)