[away3d] away3d+jiglibflash bug

[metSyS]

When I move plate fast up, and ball faling down it falls through the
plane. I'm only start learning physic engines. May be somebody will
advise which physic engine is better for away3d and some examples.
Here is my code:

package
{
        import away3d.cameras.HoverCamera3D;
        import away3d.containers.ObjectContainer3D;
        import away3d.containers.Scene3D;
        import away3d.containers.View3D;

        import flash.display.Sprite;
        import flash.events.Event;
        import flash.geom.Vector3D;

        import jiglib.math.*;
        import jiglib.physics.*;
        import jiglib.physics.constraint.*;
        import jiglib.plugin.away3d.*;

        [SWF(width="1024", height="768", backgroundColor="#FFFFFF",
frameRate="60")]
        public class Away3DFlash3DPhysics extends Sprite
        {
                private var view:View3D;
                private var cam:HoverCamera3D;
                private var scene:Scene3D;

                private var ground:RigidBody;
                private var ball:RigidBody;
                private var cube:RigidBody;

                private var physics:Away3DPhysics;

                public function Away3DFlash3DPhysics()
                {
                        stage.addEventListener(Event.ENTER_FRAME, onEnterFrame);

                        init3D();

                        initObjects();
                }

                private function init3D():void
                {
                        scene=new Scene3D();

                        cam=new HoverCamera3D({distance:1000});
                        cam.targetpanangle=cam.panangle=0;
                        cam.targettiltangle=cam.tiltangle=10;

                        view=new View3D({camera:cam, x:stage.stageWidth/2,
y:stage.stageHeight/2});
            addChild(view);

                        physics=new Away3DPhysics(view, 8);
                }

                private function initObjects():void
                {
                        ground=physics.createCube({segmentsH:10, segmentsW:10, 
width:200,
height:5, depth:200, rotationX:30, material:"silver"});
                        ground.movable = true;
                        ground.mass=100;
                        ground.friction = 0.9;
                        ground.restitution = 0.9;

                        ball=physics.createSphere({radius:20,/* segmentsH:20, 
segmentsW:
20,*/ material:"green#red"});
                        ball.mass=.25;
                        ball.friction=.2;
                        ball.restitution=8;
                        ball.moveTo(new Vector3D(0, 1000, 0));
                        ball.movable = true;
                }

                private function onEnterFrame(event:Event):void
        {

                        physics.engine.integrate(0.2);

                        ground.rotationZ=(512-stage.mouseX)*0.1;

                        ground.x=(512-stage.mouseX);
                        ground.y=(384-stage.mouseY);

                        if(ball.y<-3000)
                        {

                                ball.y=1500;
                                if(ball.x<-512 || ball.x>512)
                                {
                                        ball.x=0;
                                }
                        }

            cam.hover();
            view.render();
        }
        }

}