This render was completed in Art of Illusion 2.0 (Early Access release #1) by Marc Carson.
It uses hybrid (Monte Carlo/Photon Mapping) global illumination, raytraced soft shadows, and caustics.
Total render time for this image was 2 hours, 10 minutes. Machine specs: Athlon 3000+ with 512 MB of RAM.

I am very curious what other global illumination renderers are doing with this test case. I would be very pleased if someone could render it with Mental Ray, Brazil, etc. and send me the results. Visit the Download Section and get the scene file in various formats for importing it into your favourite renderer.

Another comparison with this test scene can be found at www.buildart.com/render_comparison.htm.
Currently it shows renderings of Truespace, Bryce, Art*lantis and Archicad with AV-Works.