Can't select 'Always Activate' on the Shockwave Flash plugin since upgrading to Firefox 39 today. I refuse to use this browser if I have to hit 'Allow and Remember' on every single page that contains flash code. It does not remember preferences, period. Have already restarted my system, reinstalled flash, and reinstalled Firefox twice. Tried uninstalling 39 and installing through a 37 stub but it automatically upgraded me to 39