I finally managed to silence my computer to an acceptable noise level. I will describe this level as "silent, but not dead silent". One has to concentrate to determine whether the computer is on or not. The noise of my own breathing is way louder. Even if I concentrate, I cannot hear the computer when standing 6 meters away.
I made a seperate web page, as there are several large images.
Click here: http://fisk.dk/silence/
Unfortunately I do not own a digital camera, so no shots of my own PC. Maybe I can borrow one next week