KDE4 is not in the TDM session list

In a multi-user environment the option should be available when KDE4 is installed. All we need are some desktop files in tdebase/tdm/kfrontend/sessions. We need only copy the files from KDE4: /usr/share/apps/kdm/sessions/kde-plasma-safe.desktop /usr/share/apps/kdm/sessions/kde-plasma.desktop I tested adding the files on a system with KDE4 installed and another without. With the former the options appeared as expected and with the latter the options did not appear as expected. Comments? Darrell