[izacus]

That's fine, the problem is that you also get all the blame as well. Once you "fix" a computer, everything that will break will suddenly be your fault.

[maxxxxx]

Very true. I once installed a printer driver in a friend's company. I got blamed for missing files by several employees during the following weeks.

[sk5t]

I've heard that auto mechanics know these as "Ever since you..." stories.