NetConnection.Connect.Closed event not triggered in Vista FF3 when in fullscreen mode

Hello Pals -

I'm trying to handle the net connection drop and provide some kind of visual cue to user. For this I'm listening to NetConnection.Connect.Closed event and when its triggered, I take further steps. The events are triggered in Vista FF3(window mode)/IE7 but in Vista FF3 full screen mode, the event is not triggered. I forcefully disconnect the network cable to see the NetConnection.Connect.Closed event is triggered.

I have following piece of code to listen to the event,
.
.
nc = new NetConnection;
nc.addEventListener(NetStatusEvent.NET_STATUS, onStatus, false, 0, true);
nc.connect();
.
.
public function onStatus(event:NetStatusEvent):void {
trace("Status " + event.info.level + " : " + event.info.code);
.
.

The function onStatus should be called whenever there is a status change in net connection. The events are not triggered in Vista FF3 full screen mode. Please share your views/ideas about this here. Thanks in advance. Please let me know incase more information is required.