All Firefox users are encouraged to download security update at mozilla.org
February 24, 2005, (Mountain View, CA). The Mozilla Foundation, a non-profit organization dedicated to preserving choice and promoting innovation on the Internet, today released an update to its award-winning Firefox 1.0 browser. The Firefox security update is available for the 27 million users who have already downloaded the free browser. The Mozilla Foundation encourages all users to download the update, which is available now on all platforms at www.mozilla.org.
Here's the download page.