captcha not working?

Hi,

I notice that the latest update was to sort something with the Captcha.
My site (after update) does not work if enable it on the ‘place ad’ page
it gives an invalid captcha, but it works on the ‘contact’ page and the ‘sign up’ page.
less of a problem but the report abuse link seems to not be working, as in it does nothing, no error, absolutely nothing.
anybody else having or seeing this problem.

(Page not given for problem as it is currently disabled)