I just installed iPhoto '08 and, as said in the title, it is PAINFULLY slow. I am running OSX 10.4 with all the latest updates, and I updated iPhoto fully as well. I had no trouble with iPhoto '06. It ran like a dream. When the photos are zoomed in a bit larger it runs quite a bit faster, but if I try to display too many photos on the browsing pane (zoom out) it bogs down and just puts along. This is somewhat depressing since I have 4000+ photos and don't like to view only 9 on my screen when browsing. Does anyone know why this might be? Just an FYI, specs: iMac PPC G5 1.8Ghz 1GB Ram Running programs: Finder, Dashboard, Mail, Safari, iChat, iTunes, Assorted Widgets.