Do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.<br /> Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.<br /> It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.<br /> You can skip the step to create a new profile, that is not necessary for this issue. See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall ---- Do a malware check with a few malware scan programs.<br /> You need to use all programs because each detects different malware.<br /> Make sure that you update each program to get the latest version of the database.<br /> *http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware *http://www.superantispyware.com/ - SuperAntispyware *http://www.safer-networking.org/en/index.html - Spybot Search & Destroy *http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free *http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page See also "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked and [[Searches are redirected to another site]]