Screen Saver problems.
I just bought a MacBook Pro with Retina Display. It shipped with OS X Mountain Lion 10.8.1. I set my screen saver to iTunes Artwork. I then downloaded 10.8.2. When I downloaded the newest version, it now says my iTunes library has no artwork. While my iTunes library has over 100 songs all bought from the iTunes store.
MacBook Pro with Retina display, OS X Mountain Lion (10.8.2)