I just got contact again with dell. They called me, and they say they werent able to do anything about my problem. But I could send them a letter with a good description of my problem, and normally i will get an answer then.
The guy @ telephone also said I needed to try laptop @ another place to see if i get voltage there.
He also told me a good joke. He said I needed to use a grounded socket. But ?? The adaptor doesn't even have a ground !!!

The guy also told me he says there are no problems with dell (but only between 8 & 17 .. aka helpdesk opening hours) LOL !
To Be Continued ...