However, observe this picture:

Two problems here, why are the zombies fullbright? Theres a light on the little platform between them (no flame effect for it yet).
And what are these strange fullbright pixels on the players legs? During the animation, the fullbright leg pixels become very apparent, although the screenshot doesnt really make it easy to see.
EDIT:
Some people in the IRC suggest making a shelf underneath the zombies, to see if this effected their lighting, it didnt help.
And even with RTWorld turned on, same problem:
