kdm's data directory (/var/lib/kdm) is not being created when compiling/installating kdm from the official ebuilds. This for example causes the selection of the previous user in kdm4 to fail. Creating the dir manually helps, but is not a solution. More detais can be found here: https://bugs.kde.org/show_bug.cgi?id=158196 Reproducible: Always
Can you confirm this with our 4.1.2 ebuilds. I think this is fixed in them. If true then close this bug :]
Works with 4.1.2 ebuilds.