On the verge of buying a MBA and I've just been to my local Apple store to try it out. I wanted to try out a huge Youtube video in 1080p to see what the performance was like. The video I tried was "London 2012 Olympic Opening Ceremony" at 3h59m. However, I just got the error message "An error occured, please try again later". I tried this on about 6 different Macs and they all had the same problem. So, would I not be able to play a huge Youtube video on my new Mac? If that's the case I just wouldn't get one. Would any of you be able to look the video "London 2012 Olympic Opening Ceremony" on your Macs and see if it works, if it does, it could just be a problem with the Macs in the Apple store, but I'm guessing it's just not compatible.