Quite a latent Firefox bug this weekend. All extensions were disabled for all Firefox users at a specific time because of an expired certificate.
I first noticed it late Friday with a little slide-down from the top of the browser saying that an extension was disabled because it could not be verified. I clicked the button for more information to see which it was, but it said I had no extensions installed. I wasn’t sure if I had any in that profile, so I ignored it.
Later, I went to another profile. Got the same slide-down message and message saying no extensions were installed. But I knew I had NoScript installed. So I wondered if there was some kind of hack disabling NoScript to allow nefarious behavior or something. But the web quickly led me to the bug report about the certificate problem.