Do you also have a search bar on your tabs bar if so, it is probably "New Tab" extension, but suggest going through all of the following. '''Remove the Yahoo Toolbar''' # "Ctrl+Shift+A" (Add-ons Manager) # Select Puzzle piece on left-side for Extensions List # Find "Yahoo Toolbar" and click on "Uninstall" button, and restart Firefox. ''(if you really need to keep the Yahoo toolbar, you can hide the toolbar instead with customize, and still change all the search defaults as below)'' '''Then to fix the default search engine''' used at the Location Bar, change the value of '''keyword.URL''' in '''about:config''' to one of the values shown in [http://kb.mozillazine.org/Location_Bar_search#Location_Bar_search_.28external_-_search_engine.29 Location Bar search] at MozillaZine. * Google Search (Google search results page)<br>'''http://www.google.com/search?ie=UTF-8&oe=UTF-8&q=''' # type in '''about:config''' into the location bar (in a new tab) # if the warning message nonsense comes up ''uncheck'' the box '''before''' dismissing the dialog message # '''filter on keyword''' # right-click on '''keyword.URL''' and choose "modify" then paste in the Google search engine string of your choice. # '''filter on defaulturl''' # right-click on '''browser.search.defaulturl''' ''(if it exists)''and again choose "modify" then paste in the Google search engine string of your choice. # '''filter on ytff''' # right-click on '''yahoo.ytff.search.popup_src''' ''(if it exists)'' and again choose "modify" then paste in the Google search engine string of your choice, if adventurous might see if "reset" would remove and see if gone in next session (well not for those keeping the extension).<br >--above used in https://support.mozilla.com/questions/850287 #If new tabs open with a Yahoo search, then in "C:\program files\Mozilla Firefox: Find the yahoo.xml file and delete it ([/questions/892957]) #If you find an extension call "New Tab" uninstall it (it is unwanted malware), this little gem came with a reinstall of "PicPick" software for me and adds a search bar to the already overcrowed tabs bar, when doing the reinstall update for PicPic do a custom install without anything relating to yahoo. '''Avoiding the problems:''' Many software installations contain additional baggage known as crapware. The Yahoo Toolbar is packaged with Java [http://imageshack.us/photo/my-images/266/javainstall.png/ picture] More information on ask.com, Yahoo Toolbars which involve extensions, not just changes to the home page. * http://kb.mozillazine.org/Problematic_extensions * Uninstalling toolbars - MozillaZine Knowledge Base<br>http://kb.mozillazine.org/Uninstalling_toolbars

Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions (My.Freeze.com NetAssistant) is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes). *Don't make any changes on the Safe mode start window. *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes