Clear the cache and the cookies from sites that cause problems. "Clear the Cache": * Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now" "Remove Cookies" from sites causing problems: * Tools > Options > Privacy > Cookies: "Show Cookies" ---- Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions 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.com/kb/Safe+Mode *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

1) First of all '''Download & Install Firefox 3.6.19'''. This version and Firefox 5.0.x are the only Stable and Still Maintained versions of Firefox. http://www.mozilla.com/en-US/firefox/all-older.html 2) Your User Agent shows that you have the '''Fast Browser Search toolbar''' (Fast Browser Search Make The Web Better - FBSMTWB) installed. This toolbar has been causing many problems in the Firefox 3.6.13+ versions. '''Uninstall''' that extension. -> Control Panel > Add or Remove Programs. Uninstall "Fast Browser search protection" and "Fast Browser Search" (MyWebTatoo) (My Tattoons) (mywebtattoo.com) (www.tattoodle.com) -> Files: fast-browser-search.xml, fbstoolbar.jar, fbstoolbar.manifest http://www.tattoodle.com/uninstall.aspx See these pages and threads about Fast Browser Search (FBSMTWB in the user agent, Help > About). * http://www.fastbrowsersearch.com/FBS_Toolbar/Help/helpUninstalling.aspx * http://www.pccybertek.com/2009/05/remove-fast-browser-search * http://forums.mozillazine.org/viewtopic.php?f=38&t=1430845 3) After all of that has been done, you can see these links: -> '''Websites look wrong''' https://support.mozilla.com/en-US/kb/Websites%20look%20wrong -> '''Problems using Facebook in Firefox''' https://support.mozilla.com/en-US/kb/Problems%20using%20Facebook%20in%20Firefox Check and tell if its working.