My brand new MacBook Pro stutters for the first few seconds when I 4-finger swipe to get into expose and when I display my widgets. What I mean by "stutter" is that the window/widget movement becomes choppy when the windows/widgets are fading in and out. It only stutters for a few seconds when I repeatedly go into expose and widgets, then it becomes smooth. I disabled automatic graphics switching and it still does this. Is this a flaw? My old 2.4 C2D MacBook NEVER did this.