I have the base level 1.6 air. Bought it only last week. It has been extremely slow since day 1. I have simply installed firefox, istat menus and neo office. Everything else is what came with the mac. I have reinstalled Leopard three times now in an attempt to stop the thing being so damn slow. It takes 5 minutes to boot up, another 15 minutes for the menu bar to go from invisible to appearing as normal. According to istat, the RAM is at 90% of usage as soon as I boot. The CPU hardly seems to be used at all. Is anyone else experiencing any issues akin to this or have I received a dud? Does anyone know of any log files I could look at to investigate why the hell my air is running so slowly? My 14 days is up this Saturday and I'm seriously considering returning this bad boy.