Hey, I just got a new 11" macbook air, lovely machine. I haven't upgraded to Mountain lion yet as I want to wait for the battery issues to be resolved (are they fixed by deleting the desktop or dock plist files?) ... however, while watching netflix and browing the web at the same time with chrome, the air just froze. i had to do a hard restart. the fan was going full blast... ... what gives? thanks, r.