So, I use the iTunes Artwork Screensaver, and I've noticed that it went from being 4:3 in Snow Leopard and Lion to 16:9 in Mountain Lion, thus taking up the full screen. However, I've also noticed that furthermost artwork on the left and right is cut off. I don't think this is how it's meant to be considering the little preview window in System Preferences shows a collage of full album art. Anyone know how to make it right? I'm running at my iMac's native resolution of 1920x1080. It persisted after a clean install (I had some big problems with my upgrade install), so I'm not really sure what to do.