Am I the only person for whom the touch screen fails after some number of months? I'm on my third SP3 and on a business trip I notice I can't swipe in from the left. in fact, finger touch only works on about 1/3 of the screen (pen is OK). under warranty so I'm not mad, but a bit disappointing. maybe I am too hard on it, though I carry it in a case most of the time and the rest it is usually sitting in a dock (brought one on this trip). grrr.