[ODE] trimesh fall through

[Andrea Leofreddi]

Hello,
I'm have some troubles with sphere-trimesh collision. When sphere's 
speed gets enough high it falls through the trimesh. I'm wondering if 
what I'm experiencing is tunneling: when the sphere runs through the 
trimesh, I still get some collisions (I do never get the sphere run 
through without collisions), but It seems they're not "strong" enough to 
push the sphere out.

Any hint?

Thanks,
    Andrea