[flash33]

fileref.upload(downloadURL, fileName);
fileref.addEventListener(ProgressEvent.PROGRESS, progressHandler);
var preloaded = 0;
var pretime = getTimer();
function progressHandler(event:ProgressEvent):void {
            var file:FileReference = FileReference(event.target);
            var delta = getTimer() - pretime;
            var speed = (event.bytesLoaded - preloaded )/delta;
            var timetoupload = event.bytesTotal/speed; 
            pretime = getTimer() ;
            preloaded = event.bytesLoaded ;
           trace( "Cкорость : "+speed +"  Время загрузки "+timetoupload +" сек");
        }