It is a malware extension that Firefox seemingly allows. The "uninstall" button is ghosted and will not work. It ca be disabled but not uninstalled, ergo: malware. The extra yahoo search tab it opened is gone, but when I open a new tab now Bing appears. I can find now way of disabling that ergo :Bing is malware, too. It is a byproduct of the browser/toolbar/search engine wars that typify even so-called mainstream business. It seems that our very good friends at mSoft, yaHoo and perhaps even moZilla have gotten their palms greased by the unscrupulousw folks @ Freeze.com. I am reluctant to go to Freeze.com or W3i Holdings, LLC to ask for help for fear even further contamination. They are untrustworthy.