Can u play videos in this page?

halo teman2 pengguna ubuntu!

I need a little of your help. In my ubuntu 9.04, I had problem playing videos from youtube in this page – the videos were lagging and firefox became hardly responding. I installed both flahs plugin non free and adobe flash from the repository.  Eventually I found out that it was because there were multiple videos on that page. I can play an embedded flash video on a webpage if there’s only one video. Playing videos in youtube is also not a problem at all.

So if anyone successfully play videos on that page using firefox in Ubuntu, please kindly mention in the comment of that page or here:

1. Your Ubuntu version
2. Your machine spec
3. Your Firefox version
4. Your flash player version

O ya, one more thing, if by any chance you know the solution of this problem, please kindly tell me too

Thanks a lot!