I was wondering if anyone has had this problem-- the power adapter goes cold dead, then it comes 'back to life'. I called Apple and told them, and they said to wipe the connection on the magsafe plug and unplug the 'adapter box' with the Apple logo and wipe the connection there. I wiped the white box's plug first--and it started working BEFORE I went to the magsafe plug and wiped it. The point is-- can simple humidity (very humid today) cause the adapter to cease working for several hours like that, OR is the adapter going dead? The Apple tech said the adapters usually just go dead and stay dead, he'd never heard of one coming back 'to life' unless it had to with the pins in the magsafe plug being uneven--- and mine were fine and even when I wiped it second. Just wondering if this is a warning that the adapter is on its way out?