GeForce 9600 GT, 4GB RAM, 2.30 Ghz Dual Core, W7RC. (Although, I have no bump mapping, 4 lights in scene (1 dir+3 points), and no ground cover (i.e. few models)).
I'm really not figuring what's wrong there, it MIGHT be my character logic, but I doubt it.
And heck, GI and molecular precision will be in place before I have a demo out.
I'll try removing the shadows on the lights and see how it works.