That seems to be related to an issue i stumbled upon today.
Somehow the desktop containments are screwed up with different screens resolutions.
Open up /usr/lib/kde4/bin/systemsettings with Alt+F2, and then change your resolution of your monitor there.
That was, what fixed it for me.
btw. this supposed to happen when i ran KRandRTray
Thanks neverendingo, for the insight and tip. The solution I found which worked best for me was to do the following:
Code:
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cd ~
rm -r .kde4
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Then logout and log back into KDE 4. This will set all desktop configs to their defaults.
Now my KDE 4 install is truly beautiful and fast.