I was obviously to slow.

Downloadlink Firefly Demo #2

It's really a nice demo and it is much better than everything i achieved so far. Also the dirty look of the level looks great.
What i am interested in is to see how the approach works on outdoor levels because this is what i am working on.
And as expected you need some decent hardware to achieve good fps (my nVidia 7600 system dropped to 8 fps on 1280x1024, my 8800 GTS system achieved constantly 60 fps).

Keep on the good work.