I've just set up the Folding Screen Saver. If you've set your Mac up to ask for a password when turning the screen saver off - it won't work with the Folding screen saver. The password request box will appear sometimes, other times it won't. Even if the box does show up, you can just click 'Cancel' and move the mouse again. More often than not, I never see the box. I don't know if this is a problem specific to my computer or not. Just a warning.