Quote - Here's the very same image and render settings with depth-mapped shadows. No problem at all (and rendered in 2/3 the time, consistent with results elsewhere; not really a surprise).

Is anyone else experiencing these problems with raytracing? If not, any idea why I would be?

P.S. Please forgive the bump map; it still needs some serious work.

no problem at all in that render?

my dear friend you have:
a) no shadows. that would explain why i dont see any shadows
b) small shadow map. this would explain why i dont see any shadow map . is its to smal lthen it gets so blury that you dont see it.

whats important with shadows is that the closer something is to an object the more sharper the shadow gets. this is why raytraced shadows are physical correct. of course with RT spotlights we can not do very soft shadows. to bad.