Teleconferencing app - Video/Audio not synced

I have a Flex based application which is using Flash Media Server (FMS) server (version 4.0)  for live video streaming between two users (i.e. a one to one teleconferencing service). This streaming is one-to-one, as defined by business rules, so that no third person can join a teleconference. Either person can start the video stream via a browser-based Flex client and communication gets established once the second user joins. Validation for connecting the streams of the two users is implemented on the FMS server (as server side scripting defined in main.asc).
Almost every teleconference has video/audio sync issue of anywhere between 2-10 seconds (i.e. the audio and video feeds are not synchronized).
Question - any suggestions on how this can be corrected, either client or server side?
Thanks for the ideas...
Jonathan

Re: Video/Audio not synced when viewing on computerT I'm using the HD+ mode and it is in synch. After more playing around I noticed that I sometimes experience the stop motion but then it quickly returns. It only happens when I have other programs open. If I close all programs and just have open the video, it works well. Again, this is a limitation of my computer power.
Try this... Open up the Task Manager and then play a video. See how much of the computers power you are utilizing when the video plays. Look at the processes that are open and close anything you don't need. Most people have too much stuff running in the background on their computers that slows it down. They usually come preloaded from the manufactor that way. I have set up my computer so that nothing runs automatically when you start-up. It makes the computer much faster.
Also, are you running Vista? Vista is a memory hog. Try messing around with Vista's settings. Vista can limit your computer power. With your computer power, you shouldn't be having such a problem. Maybe switch back to XP.

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