Problem solved! The reason for my worries was that it appeared that I had a massive virus attack!!!! My system some how got infected by the PE_Weird and W95/Kuang.GR vira!
How this happend I do not know, I have recieved no "funny" mails lately but my firewall was kinda messed up so it might have "sneaked" in the back door in one way or another. But anyways, I got a nice and clean system now and access to all applications!!