As of April 28th, 2011 Firefox 3.5 is no longer the current version of the Firefox browser. The Mozilla team has stopped releasing updates for this version and continuing to run it may pose a security risk. If you are still running Firefox 3.5, it is strongly recommended that you upgrade to a more recent version of the browser. You can visit http://www.mozilla.org/en-US/firefox/new/
to download the most recent version.