I have a first gen macair. This morning i opened the lid of the mac and heard a cracking sound. Turned out to be something related with one of the hinges. It seems as though the hinge 'pulled' an underlying piece out of place. Its odd to explain so i took a pic of the problem. I uploaded pics of both hinges, as you can see, the right hinge has something out of place. As of now, if i try to close or open the lid, i can feel tension on one of the hinges and hear a slight cracking, so ill keep it open until i find a solution. I guess the question is, is this problem a common issue? Odd thing is, i rarely use the hinges, i rarely open the lid as it rarely leaves my desk so i just leave it open. Its way past warranty, so im guessing my options are to take it to an authorized dealer to fix it, or try it myself. Im a computer engineer, so iv really taken decent care of it, i cant explain why or how this has happened, i hadnt dropped or even picked it up recently.