shadow of node clipped out

[drarem]

I think this qualified as a beginner question:

irrlicht 1.7.2
opengl 4+

Here is my 'sun'.. not very far away from my huge terrain (loaded as a model node) but not sure how to get attenuation working either. When my player moves past a certain point, the shadow of it disappears like it is being clipped. Did I miss setting some parameter?

Thanks.

http://pastebin.com/2tKidzjE

[drarem]

I find if I follow my model with the 'sun', the shadow works much better.