if I log me in into the forum over an secure connection (https://forums.comodo.com) then I get everytime on a new website load a warning that there is insecure content and whether I want to let load and show it or not.
Only if I choose not, then the connection will remain secure, but several graphics are not loaded…
Please fix that, so that all graphics will load from an secure location.
If you mean you get a warning about insecure content when you click on a topic inside these forums, this would most likely be caused by posts having screenshots attached to posts that are stored on non-secure servers (like photobucket.com).
Unfortunately, where forum members choose to store images that they are attaching to forum posts is out of Comodo’s hands.