Mozilla/5.0 (Windows; U; Windows NT 6.0; x64; en-US; rv:1.9.1b2pre) Gecko/20081026 Firefox/3.1b2pre
Mozilla/5.0 (Windows; U; Windows NT 6.0 x64; en-US; rv:1.9.1b2pre) Gecko/20081026 Firefox/3.1b2pre
Mozilla/5.0 (Windows; U; Windows NT 6.0 ; x64; en-US; rv:1.9.1b2pre) Gecko/20081026 Firefox/3.1b2pre
Mozilla/5.0 (Windows; U; Windows NT 5.1 ; x64; en-US; rv:1.9.1b2pre) Gecko/20081026 Firefox/3.1b2pre
