OK, I have a live site with a dead contact form.
Not sure whats happening here.. userforms seems to be working well and recaptcha is displaying normally.
But my (simple) form will not accept the recaptcha text entered, if you fill out the form the and submit it just refreshes the form and give you the message (please complete the spam test) as if the spam field was not filled.
you can test the form here: http://www.shoptrapdoor.com/contact-us/