I just opened my ibook, and I heard a cracking noise, and when I looked at the joint on the left side of where it says ibook G4, there is a small hairline crack perpendicular to the screen. I have applecare, but what are they going to say about this? It wasn't my fault, but now the screen doesn't stay open if I let it go at a certain point; it falls. Do you think they'd fix it for me? How long would I be without my ibook?