I just noticed the trackpad of my MBA seems like it has recessed in a little bit. When I click on it, the click sound is not as loud as it used to be, and the top 1 inch part of the trackpad is un-clickable. Meaning, if I try to click in the area, it's like I'm just pressing on the MBA's surface. There is no other issue with it, all the gestures work fine and it still clicks and right-clicks outside of that 1 inch dead zone. If it's normal, I figured I just never noticed it before. It's a 2011 MBA that was bought brand new from my local Apple Store about 2 months ago.