I have iMac 24" 7600GT, and I used to have 60fps in Window mode under Tiger. Now it is only around 30s. I also noticed a significant CPU use decrease in Leopard when running WoW. And the CPU usage is not changing be the WoW windows be in focus or not. So I am assuming WoW is not using all the resource it could so it is slower? Anyone else have also experienced a drop in FPS? Thanks!