This particular issue is fixed, but that is not the only thing causing browsers to think there is mixed content. I also believe I've fixed media not being secure as well. It's true that Google is rating HTTPS sites higher than HTTP, that is why we switched entirely, but some mixed content on the site does not change the fact that the actual site content is requested and displayed over HTTPS, a couple of images here and there don't make the site insecure by default, it just means any data sent when requesting that particular resource is not encrypted. You could have HTTP images all over the login form but as long as the form posts to a HTTPS endpoint it doesn't compromise anything. This will basically never happen due to the nature of forums. You might get the odd page where you get lucky and the bar is green because every resource is requested over HTTPS, but these will likely be the minority. This is due to the fact we display content provided by users, and we don't host all of it. Case in point: no page that you post on can ever have the forum marked secure because your signature contains an image requested over HTTP.