Following is the netstatus handler for one net stream

Following is the netstatus handler for one net stream
private function nsStatus(e:NetStatusEvent):void
  {
   trace("ns status : ", e.info.code);
   switch (e.info.code)
   {
    case "NetStream.Play.Start" :
     ns.pause();
     trace("ns started playing");
     break;
    case "NetStream.Buffer.Full" :
     nsBuffered = true;
     if (ns2Buffered == true)
     {
      ns.resume();
      ns2.resume();
     }
     else
     {
      ns.pause();
     }
     trace("NS Buffer Full");
     //ns.bufferTime=expandedBufferLength;
     break;
    case "NetStream.Buffer.Empty":
     nsBuffered = false;
     ns.pause();
     //ns.bufferTime=startBufferLength;
     break;
    case "NetStream.Buffer.Flush":
     break;
   }
  }

similarly, i am doing for other stream. Also, i am running one timer to update the seek bar. in the timer event handler, i have used one condition to check both nsBuffered and ns2Buffered flag to resume the playback.
It runs ok for sometime but suddenly application gets crashed.
Anyway, i am trying it at my end, but if you can put this topic as a tutorial, it will be really helpful...