Oh joy, flash video in scenes messing up navigation - HALP!

:*( Hi folks!

Need help badly. I used the media playback component to load flvs into my external swfs. My main container movie has scenes to allow for actions which enable the user to navigate to a specific screen. It works fine, except that when I have gone thru the first section (first scene), return to the main movie (main scene) then go to the seciond section (second scene), the playback freezes and I get the following message:

[size=1]Macromedia Flash player 7:[/size]
[size=1]A script in this movie is causing Macromedia Flash player to run slowly. If it continues to run, your computer may become unresponsive. Do you want to abort the script? [yes] [no][/size]

And my entire navigation ceases to work. Is this simply an issue with scenes or with flash player 7? If its to do with scenes, what’s the alternative? If with flash player 7, is there somewhere I can pick up a copy of flash player 6?

Muchas gracias!