The following desktop files should contain X-Red-Hat-Extra instead of X-Red-Hat-Extras (no s at the end): [tfox@goofy applications]$ grep Extras * kde-clock.desktop:Categories=X-KDE-System;X-Red-Hat-Extras; kde-desktoppath.desktop:Categories=X-KDE-System;X-Red-Hat-Extras; kde-kcmfontinst.desktop:Categories=X-KDE-System;X-Red-Hat-Extras; kde-kcmhelpcenter.desktop:Categories=X-KDE-System;X-Red-Hat-Extras; kde-kdm.desktop:Categories=X-KDE-System;X-Red-Hat-Extras; [tfox@goofy applications]$
It's fixed in 3.1-2