Many of us, who are using FREE web-host to host their site, may not have GD and TTF support. Hence they can't use the CAPTCHA system for CB at all.
I have a suggestion though which everyone can use this must-wanted feature even if the hosting site doesn't have GD and TTF support.
The main Image file is - captchasecurityimages.php
which should be processed by our/owner server to create a image. Why don't you tweak the code to generate the image not in our/owner server but by
www.joomlapolis.com server.
Your server supports everything, so let us give the
generated image from your server..... not from ours.
Note, I am not saying that entire CAPTCHA code should be executed at your end..... just the image generating code.
This will 100% garentee of 100% successful code execution.
And the code is so small that I don't think it will reduce your server performance.
what do you think ?