I rented my first movie from itunes and about 20 min into it the video got really choppy. The bottom back half of my Powerbook 1.25 ghz was really hot. I had it elevated off the desk a lil to so cooler air could get in there. I had no other programs running to. I've watch DVD's before with no problems. I'm wondering if my harddrive is taking a dive since the movie is being read off that. Anyone have any ideas what the problem and how to fix it?