I have been using my new Macbook Air 13 for one week now going from a 15'' 2008 MacBook Pro. Has anyone else noticed that the keypad feels cheap? More specifically, they don't have a soft feel when you type like the older Pros and make a snapping sound if you don't hit them dead on. Worse, the scroll pad actuation is jittery. After a few hours of working on spreadsheets my wrist is killing me. I'm thinking of returning my MacBook Air unless maybe it's just a malfunction with the one I have?