WP pages not loading

The blog http://familyontheedge.com/blog loads fine in IE and Firefox, but trying to navigate to any other page in the blog or to a specific post results in DNS Error – Server cannot be found in IE after about a minute.

In Firefox, the page doesn’t load and it displays the message “Firefox has detected that the server is redirecting the request for this address in a way that will never complete.”

I renamed the plugin file to see if it was caused by a plugin and it still happened.

I upgraded to the latest version of WP and upgraded plugins. Still happens.

The blog is hosted on Yahoo Business Services. I don’t see a .htaccess file. Everything was fine until a few days ago and this started happening.

Basically, only the home page loads ok.

Is a .php file corrupt? How do I debug this?

I’ve spent hours on this, any help is appreciated!