I tried using Security Images 4.1.2. and I can see in the comments on the component that people often have the same problem - they cannot show security images. I've decided not to use them at all, until new version comes out.
However, I've just realized that since I've installed the latest Community Builder, I had no spam messages at all (for the past few days). Could there be connection?
I have also to say something about secure images from Walter Cedric.
Some month ago I installed it and it took me long long time to get it run.
Really it was a pain.
On the other side, some days later, after it was installed I got an email from my hoster. He said that this secure images component is unsecure at all and a potential risk to my page, I should delete it as soon as possible, what I did.
So all together, I would like to ask you Gerald, if it isn't better to use another captcha tool, one that is easier to install and more secure.