I have ver 3.6.13 (shows in About Mozilla Firefox at the top) though http://whatsmyuseragent.com/ reports it as 3.0.15. In "Help" --> "About Mozilla Firefox" at the bottom it shows "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.0.15) Gecko/2009101601 Firefox/3.0.15 (.NET CLR 3.5.30729) FBSMTWB". Why is there a difference between the version loaded and reported? This happened even when I had the earlier 3.6.15 version loaded. I have a few add-ons installed: greasemonkey and 8 gm based scripts installed; AI Roboform; Better privacy 1.48.3; Java Console; Microsoft .Net Framework Assistant 1.2.1; Norton IPS; Norton toolbar; NoScript 2.0.8.1; Realplayer Browser Recorder plugin 1.1.3; Screengrab 0.96.3; Tineye Reverse Image Search. OS is Windows Vista