They work when using the latest version of Steve's DX10 Fixer version 2.5.

 

Proof:

 http://youtu.be/H7GaFRPb6fI

This is a strange one. I, too, saw the same effect immediately after upgrading to DX10 Fixer v2.5 and fiddling with the legacy shadow settings as well as the settings to block the new sun glare effect from the later Nvidia drivers. But then I was unable to replicate the effect the next day after shutting down my PC for the night. So I wrote it off as a strange artifact of installation and the oft-quirky FSX. Perhaps someone will be able to discover the definitive Fixer settings to keep the VC shadows.

But, they move as you move around in the cockpit. As far as I know, shadows are not supposed to do so.

Yeah the physics of those shadows are questionable. Far away from what you'd see in P3D for instance. 

Its all explained here by Steve.

 

http://forum.avsim.net/topic/455594-dx10-sf-version-25-soon-too-be-released/?p=3116668

so in other words it kinda works, but not really, the shadows move when your eye moves.

so in other words it kinda works, but not really, the shadows move when your eye moves.

 

I guess so.