Hi there, Some weeks ago I bought a new MacBook Air '13 (Early 2014) I noticed it isn't as fast as it was my old MacBook Air (2012), I sold it a while ago but I still remember that this Air was everything but fast. I don't get why my new MacBook isn't whippy.. I use it only for Safari, I see video that freezes/lag. You feel is not very fast. Even when I press cmd+q to quit Safari I get a delay, it's not instant as it was my old MacBook. What do you think is it? Maybe Yosemite need an update? I already did repair permissions but nothing changed.