i Have a 2.0Ghz Unibody macbook and lately ive been getting the rainbow pinwheel more often especially when using the new beta safari browser could that be the cause? and also when i try to restart my computer to boot into Vista through bootcamp it acts like its going to shutdown and restart but then it just freezes and i get a black spiral like the gray one that shows when you first start up osx, but then nothing happens and i have to force shutdown by holding down the power button. What could be the problem should i reset SMC or Pram ive never done that would it help? or should I reinstall Leopard completly and restore from my Time machine backup? Not sure what to do or why its starting to do that so any help would be appreciated. Thanks