ProgressEvent.PROGRESS issue... it only shows when it is 100%

Hello everyone,
I am having issues with ProgressEvent.PROGRESS…

I read somewhere that it might be some kind of problem with windows 7, but not sure…
http://www.uploadify.com/forum/#/discussion/6240/progressevent-progress-doesnt-work-in-windows-7/p1

So i came here for further help…
It just doesnt work, there is not “progress” it only works when it is 100% done.

Here is the code:


var assetLoader:URLLoader = new URLLoader();
            assetLoader.load (new URLRequest("http://www.whatever/file.txt"));
            assetLoader.addEventListener (ProgressEvent.PROGRESS, progressHandler);

function progressHandler (event:Event):void
            {
                var percentLoaded:Number = event.currentTarget.bytesLoaded/event.currentTarget.bytesTotal;
                percentLoaded = Math.round(percentLoaded * 100);
                trace("Loading: "+percentLoaded+"%");
                txt.text = percentLoaded+" %";
            }

The funny thing is that it actually shows on the trace, but when i put it on the web, no progress showing the percentage loaded.

Kind regards,
Cheers,
Leo.