I just upgraded from a 2009 17-inch MBP w/ Snow Leopard to a 2011 13-inch MBA w/ Lion OSX. I'm not sure if this is a Lion issue or the MBA itself, but with my MBP I would "swipe left" to go back to an old website I was surfing, and swipe right to "forward back" to a webpage. The new system requires me to gently two finger "swipe right" to go back to an old webpage, which is the total opposite and kind of annoying. Is this a universal change for Lion or just the MBA? And I'm having the same problem when scrolling up or down. Two finger down used to scroll down, while two finger up would scroll up.. now its the opposite. Thanks.