Captcha not showing

[GregChapman]

Hi Chris,

That's good to hear!

However, being an old cynic, I wonder if waiting around until Nabble fixed something might have been equally effective.

[MSalvi]

Hi everybody,
I link to this thread because I have a similar issue; captcha code is not showing anymore when trying to register to my forum (see image below).
The forum link is the target of an iframe-wrapper page in Joomla 2.5.8.
I put it into an iframe wrapper because, as far as I know (which is little when Joomla's involved)  I have no other easy way to put custom html code in a joomla page.
As you can see, if I point the browser directly to the forum link I have no problem, so I guess something is happening in the iframe "treating" (or in Joomla's iframe handling).
Any idea about it?
Thanks!