I will start. I have a Rev B - 128gb SSD. When I shut down the MBA completely - if i do not use it i lose 3% battery EVERY day. when it is shut down. If I put the MBA to sleep i lose 7% battery per day. I have seen this for over a month now. Battery calbirated 2 times in the past 6 weeks. New firmware installed 2 days ago. MBA shut down ( i don't use it much right now) 2 days later - only 1% batter lost. So - from a short test _ i would say my battery is using less power when shut down. Anyone else?