After installing Joomsef I have a problem with RSS Feed.

If you visit the website can see the problem www.tapeshhd.net clicking the RSS icon at the top of any page. Rather than display the RSS content, but displays the same page by changing the URL in the URL shown some cases has nothing to do with the RSS content.

JoomSEF v3.3.3
Joomla 1.5.12
need help

Thank you.