Today I upgraded to WP 3.5.1 and in Firefox, my dropdown menus now are non-existant on http pages...If you manually type in https:// then the dropdown menus appear and . In addition, "undefined" appears in the menu area when on an http page but NOT on https: pages.
This is not happening in Safari. This was not happening on the older version of WordPress.
The site for your reference is http://www.newfieldclub.org
I only have one page on my site which I need secured for charging a credit card. The rest of the site should be http or non-secured.