Thanks. I found it. http://www.ghacks.net/2015/02/18/firefox-38-notifies-you-about-add-ons-that-slow-down-the-browser/ http://www.ghacks.net/2015/02/18/firefox-

Thanks. I found it. http://www.ghacks.net/2015/02/18/firefox-38-notifies-you-about-add-ons-that-slow-down-the-browser/ http://www.ghacks.net/2015/02/18/firefox-38-notifies-you-abo...