AS3 FLVPlayback occasionally stuck in buffering on launch - actionscript-3

Question

I've got a Flash CS6 FLA with an instance of the FLVPlayback component (2.5.0.26) and an instance of the Progress Bar component on the stage, loading an external FLV.
I'm trying to preload a specific percentage of video before playing.
When hosted on a server, the video launches and plays as expected 80% of the time, but 20% of the time the video gets stuck in a buffering state on launch (blank area where video should be), and I can't get it to play through AS3 or by clicking the play button on the skin controls. Oddly, if I refresh the browser when it's stuck I see a glimpse of the video before the page reloads and then plays the video as expected.
I've tested on a Mac (Lion) in Chrome, Firefox, and Safari and had the same results.
The video problem gets worse if I limit my bandwidth using SpeedLimit.
Any suggestions would be greatly appreciated.
Code:
public class SimpleVideoLoad extends MovieClip {
var isLoaded:Boolean = false;
public function SimpleVideoLoad() {
// constructor code
loadVideo();
}
function loadVideo():void
{
my_FLVPlybk.x = 0;
my_FLVPlybk.y = 0;
my_FLVPlybk.width = 743;
my_FLVPlybk.height = 300;
my_FLVPlybk.source = "CARSdotCOM_OLD.flv";
//preloader component
pb.source = my_FLVPlybk;
pb.addEventListener(ProgressEvent.PROGRESS, progressHandlerPB);
}
//progress bar component
function progressHandlerPB(event:ProgressEvent):void {
var percentOfVideoLoaded = pb.percentComplete;
if (percentOfVideoLoaded>10 && isLoaded == false){
isLoaded = true;
my_FLVPlybk.play();
}
}
}