I have a little lighting problem.
All models, seem to have a own light-source and are because of that, even in the total dark visible...

A little bit light:


no light:


Any ideas how I can solve this problem?

Try:
mtl_model.ambient_red = 50;
mtl_model.ambient_green = 50;
mtl_model.ambient_blue = 50;

Looks just fine now. Thank you?
Why did it work now?
This may be off topic, but I notice, that also postprocessing effects, such as "pp_bloomblur.fx" (from the 3dgs folder "code"), kills of fps.
Do you also have that problem?

http://www.conitec.net/beta/lighting.htm

Of course pp effects slow down the rendering speed. What exaclty does kill mean for you and what hardware are you using?