If you ever encounter profile related problems in your windows network which is also a domain at the same time, try this:
unplug the network cable
log on to the domain
log off
shutdown
plug in the network cable again
restart
log on
This is what I did today on three client machines after restarting the domain controller, which was up for 7 weeks now 
By the way: Wogri seems to win the movie competition, thanks for all your support, and keep on voting until the competition is over!
