So, a lot of us have been having problems with animations being choppy on Leopard (especially the new glass dock, genie effect and expose). Apparently, this is due to vsync. I have tried using quartz debug to disable automatic beam synchronization. As soon as it's disabled, the animations are silky smooth again, just like how they were on Tiger. So this is the solution 1. Launch Quartz debug (it comes with the development tools, if you don't have it, install it using your Leopard DVD) 2. Edit => Show Beam Sync Tools 3. Click "Disable Beam Synchronization" 4. Force quit Quartz Debug to make the change permanent Your dock animation, as well as expose, dashboard, spaces should be smooth now. Lemme know how you go.