Hey, I have recently just upgraded my 2012 MBA with 8GB ram 128gb to ML, and despite the claims of ML running better - its running choppier. Animations lag, ive had to auto hide the dock because of switching dekstops via a four finger swipe was like a flipbook and it takes about a second to recognise the mission control gesture before the windows slowly judder into place. I really have nothing much on it and have 40GB free so assumed there was no need to do a clean install as i had only had it for less than two weeks before hand. Any suggestions or do i just wait it out for some kind of update? My memory usage never peaks 4GB of RAM either, so i always have over half free.