Right, but I already fixed the problems a cuple of days ago ;\)
But I still have the mentioned problems with the sky-.- It looks okay for the DoF now but really bad for the heat haze...
Because of that here is a screenshot without those two things but with fog instead:

There was a mistake for the fog in the normalmappingshader I now fixed.

Lite-C Tut. 1 Lite-C Tut. 2 Lite-C Tut. 3 (en)
Shader Tutorial (ger)

http://www.slindev.com