I'd like to know if anyone can rectify this issue. Ever since I installed SL, I have always had this horrible lag with Spaces, most notably when dragging a Space window to another Space. Dragging an application window from one Space to another or transitioning from one space to another is fine though. Whether I'm running anything or nothing, it is still there. It was smooth in Leopard but this has been ongoing with every update. I have 10.6.6 installed on a MBP 2.6 Penryn. Has anyone experienced this issue and have any means to fix it?