So, I got my new MacBook Pro few days ago. So I need to deauthorize my old Mac Mini from playing back my purchased iTunes-content. And it should be easy enough, right? But there are problems. I deauthorized the Mini, and everything seemed to work. But when I checked my iTunes-account on the MBP, it says that there are two computers that are authorized to play back ITMS-content. I went back to the Mini, and it could not play back purchased content. So everything should be OK, right? But why does it think that there are two authorized computers, when there's really just one?