I have a MacBook Pro running Snow Leopard 10.6.1 and I am unable to change my screensaver, it remains stuck on 'pictures' using my iPhoto library. each time I go to preferences to change it, I can select something new in the menu, and even run screensaver test which woks fine, but once I close the preference window, when the screensaver activates, it always uses pictures. I've only noticed this since upgrading to Snow Leopard and so wonder if it's a bug with that?

Anyone have similar problem, or any suggestions?