I'm trying to render my fluid simulations with blender, importing into it using voxel data. However, I am getting awkward results when I set the lighting type to multiple scattering. I am using Blender 2.60.

It seems that the light is being computed from a different direction.
The problem seems to be parameter invariant but these are the ones that I'm using:

The rendering step size is 0.001.
If I change to shadowed, the render seems fairly ok, given the lighting type:

Anyone has already faced the same problem? I'm new to Blender, if somebody has some tips for volumetric objects, it would be valuable

Regards.