Re: firefox 3 says I no longer have protection against online attacks
The Firefox 3.5.x branch has reached end-of-life and is no longer maintained.
You will no longer receive security updates.
You can update Firefox via "Help > Check for Updates" or download and install the latest Firefox 3.6.x or 4.0.x version.
Download a new copy of the Firefox program and save the DMG file to the desktop