[flexcoders] requestTimeout,why not take effect?

[luoxuanhuayelin]

<mx:RemoteObject id="myservice"  requestTimeout="5"  fault="faultHandler
(event)" source="tutorials¡° >
 <mx:method name="getList"    result="getListHandler(event)"  
fault="faultHandler(event)"  />
</mx:RemoteObject> 
<mx:Button x="290" y="357" label="get list" 
click="myservice.getOperation('getList').send()"/> 
   
   I have setted the 'requestTimeout' of RemoteObject. then, if local 
network failed, when I  clik on the Button to execute the 'getList' 
method, I have to wait a long time to see 'send failed' message. not 5 
second. what is the problem.
   thanks.