This one is a strange bug.
Every now and then after a restart, all the animations act as if they are in slow-motion ie maximize/minimize, dialogue boxes, live preview windows, aero peek, flip 3d etc.
It's exactly the same effect as the Vista slow animation reg hack, except It's doing it on it's own in build 7048
It's usually solved by restarting again.
It's good to see the animation in detail, but it's starting to getting a little annoying
Anyone else had this occur?