I have a group of pages that get looped through, one of which uses mplayerplug-in. It works great the first time through, but it hangs on Initializing the second time, which prevents a third fourth or fifth time. All that is running is X, mozilla, apache and mplayerplug-in. This happens on the machine serving and if I ask my laptop to run the loop.
I need an example site to test this so I can solve your problem.