I just noticed that my 17" MBP has this very annoying thing where the laptop's screen looks to be like some sort of screen tearing or what not when I'm watching a DVD. it doesn't do this throughout the entire movie, but just randomly here and there. none the less this is a very annoying thing. do you guys think something's wrong with my display or is this normal for my type of MBP? I've noticed it doesn't do this when I have my 24" external display hooked up.