Hi there!
Ever had the problem that the texture coordinates (UVs) of a mesh arrive wrong in Unity? In my case, they all arrive at {0,0} (I printed them out). I can't find anything wrong with the model in my modeling programthe UVs look Ok there.
I'm importing Maya .ma and .mb models with Unity 3.3 Pro native import.
Forced Re-Import doesn't help, neither does changing the model in Maya and letting Unity import it or creating copies of the mesh-file.
Very strange..