Ok, I found the solution. Somehow the updater didn't replace package kdm-kde4 by new kdm.
I've done apt-get install kdm and followed the install process and now everything's ok. ** Changed in: kdebase-workspace (Ubuntu) Sourcepackagename: kdebase-kde4 => kdebase-workspace -- Impossible to login in Kubuntu after Intrepid Update https://bugs.launchpad.net/bugs/293939 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kdebase-workspace in ubuntu. -- kubuntu-bugs mailing list [EMAIL PROTECTED] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs