reCAPTCHA is not working in IE 9 and IE 10

We are facing a problem in reCAPTCHA in which it renders on chrome and firefox without any problem also when we submit the form the captcha value is checked and validated as it should be, but on IE 9 and IE 10 the captcha is rendered but with different image it always shows some random numbers only and whenever you are trying to validated the entered text the text always validated as true even when we enter wrong value. any helo from you guys would be greate ... thanks in advance. -- 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://groups.google.com/group/recaptcha. For more options, visit https://groups.google.com/groups/opt_out.