Was using this RSVP form with Google Chrome and found the reCAPTCHA was telling me I repeatedly failed the Turing test. After the sixth time, I decided it might be my browser, so I tried it in Firefox which worked fine.
Curious, I went looking for a possible problem between reCAPTCHA and Chrome. According to a post there, the Transitional XHTML DOCTYPE is the cause. Changing that DOCTYPE to Strict ought to fix the issue. Given the audience, I doubt there is anyone else using Chrome to fill it. So fixing it probably isn’t worth it to them.
Interesting. I’ll have to look into issues with Chrome and the XHTML Transitional DOCTYPE.