I have an iMac 27" which I've had covered with Applecare+ for several years. It has started to develop some burn in around the edges, especially with white pages/applications. I'll try to speak with Applecare this weekend - of course no one here can predict whey will say. Its old enough that I'd prefer to get some kind of a credit towards a new machine rather than the hassle of a repair, but has anyone had experience with this and what was the resolution?