Okay here is an other demo. It should work for most of you but with the costs of a lower quality. This demo uses a depthmapsresolution of 512*512 and 16bit floatingpoint format. The version before used 1024*1024 and 32bit floatingpoint...
The lower depth causes some artifacts in the variance part but I already have an idea on how to reduce them
I included a firstperson camera and I added some animated boxes Lutz_G gave me for that reason .
And as he proposed I now fade the shadows out in the distance.
Here is the downloadlink:
http://files.filefront.com/VSM+Sun+V3/;9391415;/fileinfo.html

This is what this version looks like: