based on comment https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1058209/comments/6 , I went and uninstalled xul-ext-unity and xul-ext-websites-integration. Firefox has now stopped asking me to install all add-ons each time I start it up.
based on comment https:/ /bugs.launchpad .net/ubuntu/ +source/ firefox/ +bug/1058209/ comments/ 6 , I went and uninstalled xul-ext-unity and xul-ext- websites- integration. Firefox has now stopped asking me to install all add-ons each time I start it up.