Nice one Mac. Friends and computers do make you a bit circumspect, don't they? I get asked three or four times a month to do something for someone, etc. etc. and it now gets so bad, that when I do go out into the village, I am said to have a haunted look about me.
Fixed one, just as they were moving rooms so that the decorator could get in and then a fortnight later was told it wouldn't boot - the implication being that it was the fault of yours truly. I popped over to them a few nights later, thinking the worst, only to find that the silly sods had not replugged the CPU tower into the mains.
Conan
PS If you want a helpful little tool to clear out all of the gunk, then try CrapCleaner. It is free and very good, but do check that passwords, etc. are known beforehand.