Yes, just installed Smart Defrag Free from Advanced System Care (great product) AND it changed 2 important things; 1) changed default search engine to BNG (microsoft, you are NOT in the search engine biz, so go home) 2) switched off - save & open tabs from previous session - VERY bad as I have my fav 25 tab set for researching info Why, Why, Why cannot FF LOCK DOWN my options settings ???????????????????