I have multiple polys, each of them connected to two anchor points (spheres as sensors) with two distance joints. When I use aabbq, update a body and send in my current mouse position and its framevelocity (analog to the helppatch) the polys jump away from my cursor.
It feels like they do this with increasing distance, the further I move away from the center.
The funny thing is that updating spheres and boxes work totally normal within the same world - even between my polygons.
Any box2d veterans around? :)