Using Thesis 1.7 for the theme.
Contact form worked initially once. It now merely has a spinning arrow when attempting to send form, and nothing else. I have very few plugins installed:
Akismet
Contact Form 7
Widget Logic
If I deactivate, then get it installed, it will work once initially before reverting to spinning arrow only.
The form is found here: http://www.eyesdx.com/contact/
The FAQ merely suggests I deactivate some plugins, which doesn't help much, since there are so few.