Firefox in the last 24 hours has disabled ALL unsigned Addons crippling 90% of its userbase, Addons like Adblocker, Facebook Container and YourFamily Search no longer work.
For a company that values the user they have just effectively eliminated the majority of them.
I have used their "Nightly" build and created an installer that will still let you use your existing Addons and continue to use Firefox. (64 Bit WIndows OS Only)
To retain your current settings, addons, and book marks see this page about backing up and restoring your Firefox Profile, otherwise, you can just re-install the old addons you were using and they wont be disabled.
This version uses a pretty blue/black icon instead of the orange one. Both may be installed side by side until you're satisfied with your new browser.
Click the link below to download it.