Just upgraded to a new MBA 2012 - very satisfied. I primarily browse in safari, but I have chrome installed for anytime I need an Adobe Flash required website. There was a time when Adobe Flash player seemed to be described as absolutely terrible on macs - maligned by even Steve Jobs. However, Adobe has updated a few times, and I'd be interested in hearing from folks using Mountain Lion - is flash player still the battery eating nightmare it was? I'm considering installing natively on my Macboook Air. Let me know your thoughts.