It’s true…
The following quote from Adams’ Mostly Harmles holds so much truth it’s allmost scary:
The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair.
EDIT: Well, it seams this saying was very appropriate today, when CPs internet connection went down for almost 3 hours and noone could fix it.