         _log = Log.getLogger("mx.rpc.http.HTTPMultiService");
 
         this.baseURL = baseURL;
+
+        concurrency = Concurrency.MULTIPLE;
     }
 
     //--------------------------------------------------------------------------

    *  @playerversion AIR 1.1
    *  @productversion Flex 3
    */
    public var showBusyCursor:Boolean = false;

    //----------------------------------
    //  headers

     *  @private
     */
    private var resourceManager:IResourceManager = ResourceManager.getInstance();

    /**
     *  @private
     */
    private var _showBusyCursor:Boolean = false;

    /**
     *  @private
     */
    private var _concurrency:String;

    //--------------------------------------------------------------------------
    //
