MU Wordpress Site - Redirecting Issue

I have a wordpress MU. When I goto my home page: http://www.startupwordpresstoday.com My site redirects the wordpress sign up page. http://www.startupwordpresstoday.com/wp-signup.php

I do not have any redirects setup. I also checked my .htaccess file. The site started redirecting I think when I installed a membership plugin.

Any idea is appreciated.

I also tried deactivating the membership plugin but it still redirects. I have no redirect plugins installed.

Also I commented out the multisute define code in my wp.config file, this seems to stop the redirect. But when I goto my dashboard I am missing all my functions. The only options available in my MU dashboard is: Dashboard, Membership and Profile.

I only have 9 plugins installed currently.

I want to stop the redirect, and keep all my dashboard settings and properties. Please help!