Added a captcha for the comments, didn't like it so I deactivated it and installed another plugin. Both captchas appeared on the post's comments so I deleted the deactivated captcha plugin, including associated files, but it still shows on the post. Unticked Section Cache and it disappears, tick section cache and it reappears.
Is there a way to purge section cache?
This really threw me...
The client was complaining that the pages weren't changing when he clicked on the menu. I checked and although one of the guys here had created the menu in html and pasted it in a text box (he has been told) it all worked fine. Tried in IE and Firefox and the client was right, I clicked a link and the url changed but the content/post loop stayed the same.
Logged in and the pages all work fine.
Turned off W3total cache and then all plugins but still had the same problem. Turned off Section Caching in the Pagelines Pro settings and all the pages work fine.