Hi All I just safe-upgraded my debian squeeze system. After restarting KDE I ended up with a black screen. Obviously kde-plasma-desktop was missing. I had kde-standard and kde-minimal installed but the later conflicts with on kde-plasma-desktop > 5:5. Installing kde-plasma-desktop and removing kde-minimal fixes the problem. Sorry for sending this by mail, but I am not sure which package to file this against. Cheers Nicola