Rigidbody SweepTest doesnt work for mesh collider?

it seems that Rigidbody.SweepTest doesnt work for mesh collider. Replacing it with a primitive collider it works. Is this an expected behavior?

UPDATE 11/10/2010 Im still waiting for a reply

This should work. If it still doesn’t work please file a bug report.

it seems that PhysX doesnt support mesh or convex mesh rigidbody sweep tests.
http://www.esenthel.com/wiki/index.php?title=Actor