id get one of the locks that fits into the lock place on the PB i used one on my iBook and now on my PB. it prevents from someone running off with your laptop or borrowing it for devious application (like a prank). when i was living in a drom (before an apt) i even used a password on my screen saver, that way if i steped away for a couple minutes noone would do something like set my homepage to porn or such. . . ah, freshman year in the dorm, how mature everyone was. if someone REALLY wants to steal it you cant get anything to protect against bolt cutters, but at least with a lock noone will be drunk and walk off with the wrong laptop!