Thanks for the quick reply!
I changed the code to use a PssmShadowRenderer and got this:
Looks a bit different, but still a bit odd.
Replaced the teapot with a cube instead, as you wrote that the teapot might not be the best model to test stuff with, and it too looks a bit odd at some angles:
http://i.imgur.com/exbHk.png
If this is expected, then fine. Just that I get a bit paranoid that something is wrong with my beloved mac.
