Collision and trigers

Hello all,

I have a problem that i think is pretty simple but i just cant see the solution I would appreciate any help. I have created an object that has collision callback on and receive collision on but send collision is disabled. There is a trigger mounted on that object. When i start the project function for objects collision ie in its namespace gets called and object is the sender. Here is the example code:

function prepareScene()
{
   %mainObject=new t2dStaticSprite()
   {
      scenegraph = sceneWindow2D.getSceneGraph();
      imageMap = "playerImageMap";
      position = "0 0";
      class="mainObjectClass";
      CollisionActiveSend = "0";
      CollisionActiveReceive = "1";
      CollisionCallback = "1";
   };

   %mainObjectTrigger=new t2dTrigger(%mainObject.GetPosition())
   {
      scenegraph = sceneWindow2D.getSceneGraph();
      size = "35.000 35.000";
      class="mainObjectTrigger";
      CollisionDetectionMode = "CIRCLE";
   };
   %mainObjectTrigger.mount(%mainObject);
}

function mainObjectClass::onCollision(%srcObject, %dstObject, %srcRef, %dstRef, %time, %normal, %contacts, %points)
{
   echo(%srcObject.getClassNamespace() @ " Hits " @ %dstObject.getClassNamespace());
}

What i get in the console is:

mainObjectClass Hits mainObjectTrigger
mainObjectClass Hits mainObjectTrigger
mainObjectClass Hits mainObjectTrigger
mainObjectClass Hits mainObjectTrigger

I get this many times per second. I know how to test who is sending the collision and just ignore this but i would like to disable this because may have a lot of objects similar to this and I'm afraid it would be a performance problem in the future. Also send collision is disabled on mainObject how can it be the @srcObject.

While on the subject can someone please explain the situation with triggers and its send/receive collision. I read something and apparently you cannot disable its collision events. I believe this is because onEnter, onLeave and onStay are some kind of collisions just wanted to confirm it.

Thanks