hmm... just tested on one of my kde4 installs and it works just fine right clicking and quit---do not restart
Like I said, in all my tweaking, I must of borked something.
I think my tweaking/borking did one other thing. You know how you can drag a pic from within Dolpjin to the desktop, and click on "something
wallpaper"... That's gone too. But when I do drag to the desktop, at the bottom of the frame it says "image". I click on it, and the that is the background. So life goes on...