Ok, I found out the issue that was affecting me. It wasn't prefs.js, it was a corrupted certificate database.
I simply removed ~/.mozilla/firefox/whatever.default/cert8.db and my issue was solved. That being said, the issue at hand in this bug report might be different. I just thought I'd share in case it helps someone. Cheers. -- Firefox hangs and has becoming very slow. It also crashes Firefox has become virtually unuasble https://bugs.launchpad.net/bugs/668867 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs