My 1.5GHz PBG4 has been painfully slow for the last month or so. While I'm game to replace it with a MacBook Pro (Core 2 Duo, baby!), we haven't sold our old apartment yet, so new computers are verboten this month. Reasoning that a) it used to be reasonably snappy, and b) running a 100gb drive with 0-5gb free for a couple years could cause severe fragmentation, I copied almost everything off, repartitioned to get rid of my 10gb OS test partition (which has been very very useful, but is no longer needed for various reasons), and copied stuff back.

Unfortunately, there was a giant fly in my ointment. Since I keep an exact duplicate of my iTunes library on two other machines (via rsync), and the library was more than twice the size of my other OS