Deb
it works for me:

http://www.oralcancerfoundation.org/news/index.asp
Click here to subscribe to our oral cancer in the news RSS feed
---> works

I have not played with this perhaps you need to enable cookies?
(I am using Safari (Mac, OSX)
(Setup: Enable plug-ins, enable Java Script, Accept cookies=always)

On the mac you can select the RSS stream also as a screen saver, very cool.

M