i picked up a week 11 mba yesterday. fit and finish are perfect! when reading on this forum and not watching video i see about 52C. however, watching lost on hd fullscreen has probs: mild periodic stuttering and core heat goes up to 80 and finally cools to 70 to mid/upper 60's. the stuttering began from the start (sort of hard to tell since it is periodic - maybe 30 sec apart). simultaneously opened a macrumors forum window and my 2nd core began to shutdown - on for a sec, off for half a sec. i then changed to normal setting with lost and the core stabilized again. all of this was carried out on a flat wooden surface. it would be useful if some of you others performed the same test. you can find the lost series on abc.com in addition, i ran it down to 18 min power. plugged it in at ~12am and it was still amber at 6am. i'm not sure when it turned green.