I recently had my MBP serviced for a faulty USB port. It's a 15" 2.33ghz MBP, so it's about 2.5 years old or so now. Once I brought my MBP home, and plugged in my external harddrive, it wouldn't recognize my old Time Machine backups. I thought there might be a problem with the backups, but I see them on the harddrive. So I thought maybe I just needed to tell Time Machine to use that harddrive again. I went into preferences, and selected "change disk," and then picked my external HD again. It made a new backup, though. Now, when I go into my backups.backupdb folder, I see two folders, one is "XXXXXXX MacBook Pro 15"" and the other is "XXXXXXX MacBook Pro 15" 2" Why wont Time Machine recognize the original folder, and how can I make it use the original again? Can I combine the two backup folders now, since I've been making backups in #2 since last night?