Lamplight shines thru object !!!

I have modeled a spaceship…inside the cockpit is a regular lamp nothing fancy… when you turn the camera in stills or animation the light from the lamp can be seen coming thru the hull …this is on unified render with osa at 5 blender version 2.40…also it looks like the light is also lighting up the lines in the texure somehow (though this is not as bad as the fact that the light can be seen thru the hull. The odd thing is the hull is solid, having both a an outside surface and an inside surface, I cant figure out how the light is getting out…anyone have any ideas ??

make sure that that lamp is ray shodow

Thanks that fixed it .