WTF is up with iPhoto all of a sudden? When working with music for slideshows (25 shows total), when I got to the twelfth slideshow, the Music button became completely unresponsive. Huh? So, I go to iPhoto>Preferences, and ditto. Nothing happens. At all. I have restarted , shut down, prayed, etc., and nothing makes my Preferences option work (as well as the Music button under slideshows). Anyone else? WTF?!!!