Well, after seeing a thread by Turkish in this forum and the recent release of Yafray 0.0.7, I pulled this file back out and have rerendered with new Cached pathlight and HDRI. Changed the floor to a nicer texture, rather than the original blue reflective plane.
Click the image to see a 10 second camera fly-by animation. Note that you may need to change your player settings to see it in full, (100%) size.
(DivX Codec, 2 Meg)