Killing modules like physics on scene change

Well I have a memory leak! On a scene change I am calling remove scene and nilling out all the modules but the memory usage keeps creeping up (texture memory is stable as can be). Question is do I need to kill the standard corona modules like physics, ui, sprite etc. or is this done for me? [import]uid: 148866 topic_id: 36112 reply_id: 336112[/import]