Hi all! I am currently considering purchasing a MacBook Pro (just about to press 'buy'). But there's just one question I would like to know the answer to first: If I use Time Machine with a regular external USB harddrive, how will Time Machine handle it if I plug the harddrive in and out a couple or serveral times a day? You see, I need to move my (future) MacBook around a lot, but I also want to have its data backed up automatically. Will this solution work OK or will Time Machine "get confused" because of the constant (or frequent) plugging in and plugging out? - Thanks!