Strange. You could try to delete the folder called .KDE at your /home/user/ directory:
rm -rf /home/ratbatblue/.KDE
That would delete all your settings as well. However, next time you start KDE, a new .KDE with default setting will be auto-created. This is a little work around that I've used numerous times with older versions of Gnome, but might also help you also. Needless to say, I never did it with KDE, so good luck
Regards!