When I make the collision mode "Combined," the physics system crashes on the 360.
If I make it "normal," it works fine.
Except it's slow :-)
Btw: I'm using the brute force space, because the grid space (with 64/32/64 bins) is much slower than brute force even for a single-body case. Someone on forums.xna.com said there was an octree for JigLibX, but I can't find it. Is there one?
I also don't see any acceleration structures for the meshes — I'm assuming you're only supposed to use very small meshes, like convex hulls?