My problem was resolved after I deleted /etc/kde4rc.
I think this might be related to https://bugs.launchpad.net/ubuntu/+source/kubuntu-default-settings/+bug/193498
My problem was resolved after I deleted /etc/kde4rc.
I think this might be related to https:/ /bugs.launchpad .net/ubuntu/ +source/ kubuntu- default- settings/ +bug/193498