Sorry....that was the FIRST thing I tried. I ran the lighting all the way up to "Best", at 1-pixel accuracy, 50,000 photons, 100% photon map, Full raytracing. 0.5 pixel shadow....pretty much the top of every slider on the panel. Made essentially no difference. The shadows were nicely rendered. This ain't in my imagination. I don't know what is the difference between the results I'm getting and the results others are reporting, but I'm getting pretty tired of people repeating the obvious.