I've bought my first air on Feb. 5. I had to exchange it for a new one because I was having problem with video playback. The second one is also having the same issue. I guess it overheats and one of the cores shuts down. This happens about 75 percent of the time be it from watching videos on youtube, movies from itunes or other movies that I have downloaded. Today I have to take it to a Mac Genius and if deemed defective they will let me exchange it for a macbook pro. I have recorded video proof the air freezing and skipping from watching a movie from itunes so it will prove to them that I am not making this up. I really do not want to get rid of my air as I love the form factor and just the overall sexiness of the laptop. Other task such as word processing, listening to music, instant messaging, email, etc.. I have no problem whatsoever with. My question is would you exchange the air for a macbook pro? I've never used a Pro before for an extended period of time. How is the keyboard compared to the air(I love the air's keyboard). I am so use to the air's size would I have a hard time adjusting. I really watch a lot of videos on my mac's so its important for me to have a computer that can handle video playback. Your opinions are greatly appreciated.