function _onSecurityErrorEvent(e:SecurityErrorEvent):void{

var loaderInfo:LoaderInfo = e.target as LoaderInfo;

loaderInfo.removeEventListener(SecurityErrorEvent.SECURITY_ERROR,_onSecurityErrorEvent);

trace("error from " + loaderInfo.loader);

}

 

var i:uint;

var loader:Loader;

for(i = 0; i < 100; i++){

loader = new Loader();

loader.contentLoaderInfo.addEventListener(SecurityErrorEvent.SECURITY_ERROR,_onSecurityErrorEvent);

loader.load(new URLRequest("someURL"));

}