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)