One of my only snags with Mountain Lion is that it seems take take noticeably longer to swipe between spaces. Swiping is quick for most of the motion, but just as soon as the next screen starts to settle it slows down. The major problem with this is that I have to wait for it the complete before I can interact with the space. It may only be a fraction of a second but it's noticeable to me. Anybody else notice this? ---------- Just experimenting with it now, it seems like its due to the animation, not the slowness of the system. When I may a dramatic swiping gesture to the next page, there is no delay. Apple probably wanted a realistic slow down effect, but it's just kind of annoying. It should act more like iOS are launchpad icons.