Note: Firefox 1.5.0.x will be maintained with security and stability updates until April 24, 2007. All users are encouraged to upgrade to Firefox 2.
from Sweet young Wordzilla
Quote
20 March 2007
Firefox 2.0.0.3 and Firefox 1.5.0.11 Security and Stability Update
...Due to the security fixes, we strongly recommend that all Firefox users upgrade to these latest releases.
Note: Firefox 1.5.0.x will be maintained with security and stability updates until April 24, 2007. All users are encouraged to upgrade to Firefox 2. Firefox 1.5.0.11 is available for download from http://www.mozilla.com/firefox/all-older.html...
from Sweet young Wordzilla