Well I have had my MBA 1.6 for over a week now and the dock has been glitchy since day one. I get a lot of the flashing back and forth with black and icons disappearing for a second and then reappearing . I have tried going into the activity monitor and shutting down the dock a few times, but it hasn't fixed the glitch. Restarting also has no affect. Any suggestions on a possible fix? I am running leopard that is fully up to date.