Today I finally managed to change the cpu-fan on my server. Not that the cpu was running hot, but the noise was alarming. My server is just an old intel P3 450 on a slot 1 board. Main problem replacing the fan was a piece of plastic keeping the old fan in place. But with some brute force the now redundant plastic cover was removed and a new fan is in place. The server rebootet without problems and on the internal net every thing work just fine. But the adsl link was not working. I had disconnected the power from my adsl-modem as well. Upon reconnecting the server I just checked the status lights on the modem which indicated that everything was ok... I just power-cycled the modem again and my connection is up again. Maybe I should be looking for another modem as things are starting to fail a lot on my homenetwork.