I have the jQuery library called from Google earlier in my pages, then there's another version added that conflicts with other elements on the page.
I went through the code, but couldn't find where it was being called. I really didn't think that it was part of your code except that it only shows up if there is a Gravity form on that page.
For sake of being thorough:
This is what I am calling above wp_head:
<script type="text/javascript" src="http://jqueryjs.googlecode.com/files/jquery-1.3.2.min.js"></script>
This is what shows up on both of my Gravity Form pages (and no others) as a result of the wp_head call:
<script type='text/javascript' src='http://DOMAIN/wp-includes/js/jquery/jquery.js?ver=1.3.2'></script>
<script type='text/javascript' src='http://DOMAIN/wp-content/plugins/gravityforms/js/conditional_logic.js?ver=1.3.10'></script>