All seems OK now. What was the nature of the problem, a virus? I am concerned that the source of the virus is still on the PC, and I might release it again. Did the scans tell you where the problem came from, where it was lurking or why Avast, MB etc. did not shift it? Would Spybot have stopped it if I had immunized? Any information welcome. Have donated, not much but will get you a beer.