not work

Generally I enter the captcha correctly all writing , and in return get a CAPTCHA that is not correct , and so on 5 -6 times and then all well and then again once I enter 5-6 -- 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.