reCaptcha not working in Joomla 3

Hi,reCaptcha is not working in my joomla 3.0.1 , can any one provide me help to fix this, i am not pro in these kinda things, i am learning to build web in joomla -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.