problem running the recaptcha code from the wiki libarary

[eluser]Oussama M Billah[/eluser]
Hello,

I have problem having the recaptcha validating correctly.

http://codeigniter.com/wiki/ReCAPTCHA/

When I fill the form i get redirected to the system home page regardless of wether the information in the form matches the captcha text.

the code is the same as in the zip file i downloaded from here:

http://codeigniter.com/wiki/e5b188f617d6...fafb65c2d/

any idea what can be wrong?