WebService is slow to be ready

Steps to reproduce:
1. Generate Proxy via Introspection of attached WSDL
2. Launch application which polls generated webservice class for status of _serviceControl.ready
3. Sit back and wait for around 30 seconds for Flex to become ready even though web server has long since returned wsdl (Confirmed in the Fiddler Traffic Monitor)

Just to be clear: This is not a web server performance issue. The WSDL is being returned in under around 1 second.

Relevant Code:

public class NPSEnterprise extends _Super_NPSEnterprise
{
public function loaded():Boolean

{ return this._serviceControl.ready; }

}

and in main application code behind

...
var check_ws_loaded_interval:int = setInterval(function():void
{
if(nps_webservice.loaded())

{ clearInterval(check_ws_loaded_interval); onWebServiceLoaded(); }

},100);
}

private function onWebServiceLoaded():void

{ ShowLoginScreen(); }

Actual Results: Around 30 seconds later serviceControl returns ready and we display login

Expected Results: Web Service proxy should not require additional introspection after proxy generation

Workaround (if any): None