Afterupdating WordPress Contact Form 7 not working

I had a fairly complex working contact form 7 working and after an update it’s not working.

I’ve uninstalled and re-installed the plug in with the default contact form and it’s still getting hung up on the send.

Any ideas?

You can see it on this page: http://www.h2oaddicts.com/ecuador-surf-trips/surf-tour-itinerary/

http://wordpress.org/extend/plugins/contact-form-7/