For a little while now, I've noticed that my screen has been flickering as if I'm changing the brightness brighter or dimmer. It'll get dim for a second and kind of flicker and then go back to the brightness level I set. It's not a constant issue, but happens fairly frequently. Unfortunately, I don't have AppleCare so bringing it in is somewhat out of the question. It's a first gen MacBook and I don't think the cost of screen repair is justified, unless its a lot cheaper than I imagine. Is there anyone out there who has experienced this that has found a fix?