The remote host is missing an update to thunderbird announced via advisory FEDORA-2009-0183.

Apply the appropriate updates. This update can be installed with the yum update program. Use su -c 'yum update thunderbird' at the command line. For more information, refer to Managing Software with yum, available at http://docs.fedoraproject.org/yum/. https://secure1.securityspace.com/smysecure/catid.html?in=FEDORA-2009-0183

Update Information: Update to the new upstream Thunderbird 2.0.0.19 fixing multiple security issues: http://www.mozilla.org/security/known-vulnerabilities/thunderbird20.html#thunderbird2.0.0.19 Note: after the updated packages are installed, Thunderbird must be restarted for the update to take effect. ChangeLog: * Mon Jan 5 2009 Christopher Aillon 2.0.0.19-1 - Update to 2.0.0.19 * Wed Nov 19 2008 Christopher Aillon 2.0.0.18-1 - Update to 2.0.0.18