Some of us never really had a chance to try Firefox 37.0, and that’s probably a good thing. Version 37.0 tends to crash when started, and it includes at least one new security vulnerability.

Mozilla pulled Firefox 37.0 from the auto-update queue after learning of these issues, and yesterday released 37.0.1 to resolve them.

Unfortunately, despite the fact that this would have been a really good time for some kind of announcement of what was going on, Mozilla has said exactly nothing about this. The release notes for Firefox 37.0.1 don’t provide any insight, and although the security advisories page has been updated for 37.0.1, it still doesn’t say much.

It does appear that Mozilla’s attempt to enable Opportunistic Encryption in Firefox 37.0 didn’t work out as expected, because the HTTP Alternative Services feature is disabled in Firefox 37.0.1.