I have a question about my new 11" MBA. The bottom 4-5mm (slightly less than 1/4") of my trackpad is not responsive to touch sliding. I can still press down there and it will register a click, but my cursor does not move if I slide my finger until I reach about 4-5mm above the bottom edge of the trackpad. The top, left, and right sides seem to be responsive almost all the way to the edges. Is this normal? It doesn't sound like much of a big deal, but since the trackpad on the 11" is pretty small, I find myself trying to use the 2-finger scroll in web pages and it doesn't always register because one (or both) of my fingers start below this 5mm area.