Navigator 9.0.0.5 was released earlier today in order to incorporate the
security fixes included in Firefox 2.0.0.11. Please be sure to update your installation of Navigator when prompted by the automatic updater, or you can force the update manually by choosing "Check for Updates" from the Help menu. The release notes for this release are
here.
You can also download the full installer for Netscape Navigator 9.0.0.5 from
browser.netscape.com.