This is why Linux is not ready for the desktop
If you delete the empty directory /var/lib/xkb, then enable the KDE keyboard layout switcher, the up-arrow key works like print-screen.
At least on my box it does. It took me a month to figure it out.
a) I didn't delete it. It must have unlinked on a crash
b) it's EMPTY! how can an empty folder to which I have no write access be so important?
c) It's a joke (but it did happen)