for those having the same problem: as a workaround I use xfwm4 from xfce4 right now which works perfectly and has some more configurations than metacity from gnome but is not quite as configurable as kwin.
-- no icons of running KDE-apps in gnome-panel when using kwin https://launchpad.net/bugs/70056 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs