I use Norton AntiVirus. I have run Live Update, I have no new updates. I use Firefox 37.0.1 My home page is set to my email account online. I have set Firefox search to the search engine I want. I have removed Norton Safe Search from the list. Neither it, nor "Ask" appears on the list. I have clicked on the '3 dots' and turned off both Norton Safe Search and Norton Safe Share. I have rebooted (completely shut down computer, waited 3 minutes, then started it up again). When I start Firefox, I get my first tab as my home page. I click to open a new tab and . . . there it is, Norton Safe Search. STILL. I have spent hours online following steps and getting no success.