HTTP live stream is playing only when i use to re install Flash media server 4.5?

   publishing a live stream using livepkgr in flash media live encoder and tried to play it using strobe playback media, the stream is playing for a few minutes after that it seems like

buffering? and after re-install the Flash media server 4.5 it starts play again and this time also for a few minutes.

re-install needed repeatedly... how could fix this ?.

Thanks in advance