I'm typing this on my brand new rMB that has literally arrived this morning. So far I've experienced no lag or anything like that. I love the keyboard, the trackpad, and the screen. This is definitely 100% not a thread intended to insult the rMB. I love it! There is however one snag in my otherwise perfect machine. One that I have only just noticed. The bottom left foot doesn't touch the surface beneath when the MacBook is open. When it's closed all four feet do touch the surface, but once it's fully opened they don't. I've tried four different surfaces just to be sure it wasn't the table I was using. At first I thought the body must be massively warped or something equally annoying, but I've looked at it from every angle and it seems perfect. Any ideas?