I have a late 2010 MacBook Air with 2GB ram and 64GB flash storage...basically the most basic Air with 1.4GHz processor...I did not install Lion, but would consider doing a clean install just to make sure the machine still runs well...but I was wondering how many people with this similar machine will update to Mountain Lion when it comes out? I will most likely be doing a clean install of this myself when it comes out. Anyone who will update...do you expect...better performance...similar performance...or less performance?...given that this is the most basic machine.