Still no 60fps scrolling on retina MBP under ML! Terrible show from Apple. I'm returning it first thing tomorrow! In all seriousness though, you can really tell that the version of Lion that shipped with the rMBP was put together at the last minute. Mountain Lion on this thing is simply sublime. Not that its a priority in any way, but scrolling websites is now as buttery smooth as IE9 on bootcamp, which is just a bonus considering I found scrolling fine on Lion. All in all, anyone being put off by the "lag" complaints beforehand regarding browsing on the rMBP, ML has relieved it all. Considering I've only owned it a week, ML has made it feel like a new machine altogether. Even the subtle changes to the GUI, such as the new dock and more saturated icons, really make the display on the rMBP a pleasure to use (if it wasnt good enough already!). Hopefully now we'll see an end to all the crying on here and have some normal, hopefully positive, contributions to the boards.