Version: (using KDE 4.1.3) Compiler: gcc/gcc++ OS: Linux Installed from: Unspecified Linux kde 4.1 worked fine until I installed XEN. thereafter I could not start. I installed opensuse 11.1 with KDE4.1 for the second time, it would still not start. I installed 11.1 a third time ,now with KDE3.5, no problems whatsoever.
It seems you're having packaging related problem. Try using a new clean user account.