Being that your site is a wordpress site, and it's the home page that is causing this problem I would think that it's either a plugin or an issue with that ever the latest change you made to the site is (Either a plugin, custom code, or in the theme)...
I would be happy to help you fix this issue...
It's not actually a server configuration issue, it's an issue inside of wordpress. Wordpress is coded in PHP, which is a server side code meaning that the code is run on the server and outputs the html that gets sent to the end user.
Send me a message and we'll get this fixed right away.
--James