reCAPTCHA – could not open socket

I have just encountered this problem too
TRY REPLACING
$recaptcha_verify_server = ‘api-verify.recaptcha.net’;
with
$recaptcha_verify_server = ‘128.2.186.116′;
in recaptchalib.php.
It works for me. Let me know if it is helpful to you
Cheers,
Jigar

reCAPTCHA – STOP spamming !

CAPTCHAs (Completely Automated Public Turing test to tell Computers and Humans Apart) can protect you and your users from spammers and crackers.
Frankly speaking … user didn’t like ugly looking pictures and which can be easily cracked.
recapcha – I think the new wave of useful captchas is really fascinating.

I used capcha in a project and [...]