I seem to have killed the keyboard on my MBA. Not entirely sure how. Didn't spill anything on it, exactly. Touched it with sticky fingers while cooking (was using it for a recipe). Afterward, several keys -- including ones that I hadn't touched -- were unresponsive. I grabbed an alcohol wipe and some compressed air, thinking the problem was purely mechanical -- stick fingers, leading to stuck keys -- and gave everything a good blow and wipe. But no change at all. I even pulled a couple of the problem keys off and underneath, they are pristine. I'm starting to wonder if something got shorted. Have an appt. with the "Geniuses" today. That's always fun.