Thanks for responding, jeremeylduvall. I am on a secure network at home and never post from a coffee shop or the like, so I have never checked the HTML box you mentioned. I also discovered when I went to the Firefox Advanced Certificates as you suggested, it said the Certificate came through WordPress by way of GoDaddy, which is where I have my domain name. It seems the Certificate has been temporarily approved until 2015, and I haven’t had this problem recently. Weird.