I’m running release 16.5.0.135 of NIS2009 and based on some lame tech support advise was told it would work with Firefox 3.5.2. NOT TRUE! Frankly, Symantec’s distribution of new releases leaves alot to be desired. Live Update is ok but you’ve got to jump thru flamming hoops to get new releases. The concept of going to the update site and then hoping the uninstall process works is no fun. Come on Symantec you can do better.