Just got the new iMac 2.5 base 21.5. Couple of quick observations: 1. Its fast 2. Geekbench score was around 7300 3. Perhaps apple has addressed the yellow screen issues with the 21.5. Mine is near perfect and uniformly white. My screen is model AOOC, seems like a new manufacturer. 4. Shipped with 10.6.6, and 10.6.7 doesnt appear in software update. Not sure why?