Hi Bigboy
I just tested this on Ipad 1 and Ipad 2. The videos play fine this side. Can you please try to clear the browser cache by following these instructions
griffintechnology.com/blog/tips-and-tricks/how-to-clear-your-ipad-cache-cookies-and-history/
If that doesn't work, please do what is called a "Hard Reset"
portables.about.com/od/newsandviews/ss/iPad-tutorials_13.htm
It is very important that you see the apple logo like they describe in the post, otherwise you will just do a "soft reset" which won't work.
Regards
James