NetStream.Play.Stop and Complete fired early on RTMPE streams

Hi there

I am experiencing an issue with playback on RTMPE streams. after investigation it seems that the FMS server is firing the NetStream.Play.Complete message at random points, indicating that a stream has ended. This is happening and random points during the stream,  not even close to the end.

The order of Status messages is as follows:

Thu Oct 20 2011 04:15:17 PM :: NetStream.Play.Start : status

Thu Oct 20 2011 04:32:40 PM :: NetStream.Play.Stop : status

Thu Oct 20 2011 04:32:40 PM :: NetStream.Buffer.Flush : status

Thu Oct 20 2011 04:32:58 PM :: NetStream.Buffer.Empty : status

Thu Oct 20 2011 04:32:58 PM :: onPlayStatus : NetStream.Play.Complete

As you can see roughly 17mins into playback...although the stream is 1 hour 24mins long

I have tested this numerous times, and each time it is at a different point in the stream.

Intermittently the NetStream.Play.InsufficientBW warning is being fired prior to NetStream.Play.Stop.

I am using a player built on OSMF 1.5.

Just need to know why these messages would be fired and how to handle them

Thanks

Steve