I saw videos and posts that people put up stating that the animations when using the retina MBP (such as switching to full screen, going into mission control, etc) were very laggy on the demo units in the Apple Store. I finally saw the retina MBP in the store today and have to agree. However, this seemed like a problem across the board, as it seemed to occur with the new Macbook Airs as well. I'm wondering if those extra 3 buttons on the desktop are the culprit (the ones that let you select one-to-one, schedule an appointment, etc). I couldn't find a way to deactivate them or quit their process in the activity monitor. Does anyone know if that is messing up the smooth desktop transition animations or if the HD4000 with Lion is really in that bad of shape?