How Do I fix this 302 redirect in WordPress?

Idk if this is multiste or advanced wordpress. I have a multsite install and my signup page is what shows up when my Dedicated IP is entered into the browser. A developer has determined the problem to be a 302 redirect. Here is a link to an image of how he got to that conclusion. How do I go and fix this "302 redirect"? http://i.imgur.com/vhbN33r.png