Error 404 for RSS feed on new blog

Hi folks,

Just uploaded WordPress 2.8 to my web site Web Stimulation and when I click on the RSS feed link, I get the following error message:

Web Stimulation » Page not found http://webstimulation.com http://wordpress.org/?v=2.8 en hourly 1

It appears to be giving me an error 404, but I have no idea why.

Does anybody have any ideas, because obviously the feed is very important for me to get up and running?

Thanks in advance.