I plugged my iPhone into my work computer today, and found I have 5 of 5 computers authorized. Over the past couple months, I have switched around a lot of computers, and I think some of the old (read no longer used) computers are authorized. Is there a way I can get Apple to unauthorize all computers on mu account, and reauthorize just the 3 I use now? What do I do, and how do I contact the appropriate people at Apple? Thanks!