In rawhide, GNOME menus no long include /usr/share/control-center-2.0 so gnome-im-properties.desktop should be installed in /usr/share/applications. (If you only want it in the GNOME menus, add "OnlyShowIn=GNOME;")
s/gnome-im-properties.desktop/gpilotd-control-applet.desktop/ obviously :)
built into fc4-hold
Should be fixed now in rawhide