It was quicklaunch. I created a new user which successfully logged on to KDE, so I deleted my own configuration settings. When I added the quicklaunch, Plasma crashed.
-- Notification area visually corrupted when using qt4 applications (Skype) https://bugs.launchpad.net/bugs/291529 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qt4-x11 in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs