Thanks Gabriel. I wasn't thinking about that when I posted my reply; it dawned on me afterward what you meant. DOH! Thanks Emily. Yes I've tried rebooting several times and I just defraged last week. From what I've read about the new Intel 3.6, it is a single processor that works like a dual and I don't know how that would affect P5. If I could determine it is the lighting I might take up your suggestion. I'll probably upgrade anyway (I'm a tech geek and I have to have the latest & greatest. Besides, it'll probably help speed up Bryce renders too). Thanks for the link.