BuddyPress.org

modemlooper, I took a fresh look at your site and you aren’t sending the js for jquery. These links to script code are empty in the browser.

<script src=”http://twitterfic.com/wp-includes/js/jquery/jquery.js?ver=1.2.6&#8243; type=”text/javascript”/>

<script src=”http://twitterfic.com/wp-content/mu-plugins/bp-core/js/jquery/jquery.livequery.pack.js?ver=2.7&#8243; type=”text/javascript”>

Check the permissions and ownership and existence of those files and their containing directories please. The js isn’t running it because the browser isn’t getting it.