Hey, so I've had my MBA since Christmas 2011 now and I've come across quite a few bubble-type marks on my screen. You can't seethe marks from looking straight at the screen but you have to turn off the laptop coplmetely and tilt the screen towards the light and you can see all of the marks. I've tried rubbing ye screen with a micro-fiber cloth and the marks will not come off. Can someone help me remove these marks? Thanks.