Upgrade to the speediest, safest and most advanced Firefox yet. Things move quickly online, and they’ve beefed up the engine that runs Firefox to make sure you can keep up: Firefox 3.5 is more than twice as fast as Firefox 3, and ten times as fast as Firefox 2. As a result, Web applications like email, photo sites and your favourite social networks will feel snappier and more responsive.
Firefox 3.5.7 fixes the following issues:

• Fixed a common stability issue.
• Fixed a problem with how updates were being presented to users.