https://archives.gentoo.org/ fetches its favicon with the following code: <link rel="icon" href="http://www.gentoo.org/favicon.ico" type="image/x-icon"> This causes a browser security warning about a partially encrypted SSL website. A way to resolve this would be omitting the "http:" as per the following example: <link rel="icon" href="//www.gentoo.org/favicon.ico" type="image/x-icon">
done, thanks.