Normal
I'm not even sure how old my computer is... I think it was from my second year of high school, which would make it um... six (or seven) years old. It never really had any serious problems though (excluding a broken fan, (which happened now again) a CD that blew itself up and a few minor harddisk failures), or at least, none that couldn't be fixed. I am starting to doubt now though... but we just don't have the money to buy a new computer.