Hi, I have a weird problem. This morning when I opened up iPhoto to burn some photos to CD, all my thumbnails blacked out. When I scroll through them, I get a rolling block that shows the images, but as soon as I stop scrolling, the images black out again. Any idea what the problem might be please? My set up is this: Apple MacBook Pro 15" 1.83GHz Intel Core Duo, 2Gb Ram, 320Gb WD hard drive Mac OS X v10.4.11 iPhoto 6, v6.0.6 12,701 photos, taking up 51.3 Gb in the iPhoto library and this is a screen shot: Any ideas? Run out of memory? Virus? Too many pictures for iPhoto to cope with? Thanks for any help or advice, Effortless.