With OD up and running WMP (full or skin mode and just these two), if I move my mouse around my CPU usage jumps up to 80-100% until I stop moving it. I usually use the skin mode which you can see if you click on my name. If I'm watching certain videos it will stutter. When I close ObjectDock, it will not go above 25% moving my mouse and no higher than 10% just sitting there. This is with both engines.

I reinstalled WMP and I doubt reinstalling OD will help. My crappy MX440 should be able to handle it. XP Pro, AMD2200+ plus and 512 PC2700.