I mean, I can guess what it is. However, how long does your screen need to flicker for this to be considered a problem? Sometimes my screen flickers, but it's only after I first wake my laptop from sleep. It may flicker, but if I play around with my brightness settings (make it dimmer, then brighter, and then dimmer again, etc), it's usually ok. It doesn't flicker after the first 1 or 2 minutes, and at worst, it'll flicker (infrequently) between the between the 2-5 minute mark. Most of the flicker happens in the first minute. Of course, it doesn't always flicker when you wake it from sleep. This is why I haven't done anything about this issue. I also didn't want to take my laptop into the store in case it DIDN'T flicker when I showed it to them. How embarrassing. It also seems difficult to prove. However, reading about in a new thread has made me start worrying at least a little bit, since I'm still under AppleCare right now. Should I take the damn thing in? Is this the infamous "screen flicker", or is the genuine problem worse than what I'm experiencing?