That is not right. I suppose it could be a design flaw, but I have not heard of this happening to anyone else, yet. I guess we would need to wait to see. My guess is that as long as it doesn't spread it should continue to work as it does now. If there is no evidence of a drop or hard ding, I'd still take it to an apple store just to see if they would be willing to help you out. Zero guarantees, though.