I have based my xna game physics off of the samples here.
It seems that if my frame rate goes under 50. (time to render a frame 0.02s) jiglibx goes insane. Things move around seemingly random at crazy speeds. Then if I move the camera into an area with less objects to render and bring the frame rate back up the physics corrects its self and things setting back down after a few seconds.
Seems if I call Integrate with a dt of anything larger then 0.02 this happens. I tried an older version of my program and I can manage 0.05 but after that the same thing happens. has anyone else noticed this in there apps?? or if you haven't give it a try, and slow your apps down below 20hz passing in gameTime.ElapsedGameTime.TotalSeconds and see if you can reproduce this???
Am I crazy?