Comment 8 for bug 156090

Mario I understand that, but without elevating the installer I can't install to /usr/lib anyway so it's obvious the addon is being installed to my profile.default/extensions subdirectory.

The bug is simply that the Ubuntu Supported addons can not be removed through the normal means, which is contrary to normal Firefox operation on other platforms, when bringing new users to Ubuntu it's nice to be able to tell them that everything is the same in Firefox after wrestling them away from Internet Explorer. There should be a single install/remove method in Firefox, which Mozilla have provided but it was disabled in the supported XPI's.