Colliding with Blocks

I've been playing around with the physics engine for a while now, and I've noticed some strange behavior when a physics entity collides with a level block at moderately high speeds. When this happens, sometimes the physics object becomes lodged inside the block, and kind of wiggles around like it's stuck. Sometimes it breaks free, usually it doesnt.

This is a problem, since my game involves physics objects hitting lots of walls, sometimes at high speeds. Is there any way to avoid this problem?

Look at 6.3 ph_iterations. It might be what you're looking for.