Looks like there are 2 major problems with many macbook airs. The first is the battery issue. I don't know if i am having it with my third because I have not run the battery down to 0 yet. The second is when playing some videos such as 720p or even some 480 from what i am seeing on mine and reading online after the machine heats up the video gets jerky etc. I am frustrated because today is the last day I have to return my black mb which works flawlessly. The battery is perfect in it and lasts an hour longer then the air and is at 100% health where the air is at 96 now and 4900 mah. I can throw any type of video at the MB and it has no prob what so ever. I love the air thought. It blows the mb away as far as beauty, feel, screen, trackpad etc but these 2 serious issues are not good. I don't care about 1080p but the air screen can do 720p fine and it should be able to play it wo over heating etc. Since I am on my third they said they would not charge a restocking fee so I should prob hang on to my MB until Apple addesses these issues. I can always sell the mb and get the air later. Any advice welcome. It is such a beautiful machine.