I have been having a problem for weeks with Firefox where it keeps resetting my default search engine to Yahoo. I tried a lot of things, including looking through all my extensions for anything untoward and most recently refreshing Firefox. The problem remains active. I would really like to not have to keep resetting my search engine every day.

Post-refresh, I find that Firefox is opening new tabs from links on pages I visit. That one is a REAL pain to deal with. It seems to kick in more on commercial pages than other pages. How do I stop that one? I already appear to be clear of bad extensions and I already refreshed Firefox1