O_B - Acceleration cache was on.
njeneb - Yes, the background is much too uniform and that is something I am trying to fix. While I could try to break it up with a distance shader I would like to try to get variants in the cloud height.
Tangled-Universe - I think I had the fractal warp setting at 0.5. or somthing close to that.
Rhalph - GI was set to 2, but I think alot of the detail comes from the cloud sharpness settings.