I used to have a google search window in my navigation bar. Some download installed Yahoo to my dismay and I can't find where to uninstall it and reinstall Google.
I downloaded PDF creator from Sourceforge.net. Apparently I agreed to have my navigation bar searcher become Yahoo, replacing Google.
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Do you have the "Search Settings Plugin" extension (Tools > Add-ons > Extensions)?
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems
Thanks for getting back to me. As soon as I posted this question I noticed the "down arrow" next to the Yahoo icon in the search window. Lo and behold, clicking on it reveals choices, such as: Google, Yahoo, Amazon, Answers, ...Wikipedia etc. One can change searchers that easily.