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 220.127.116.11 fixing multiple security issues: http://www.mozilla.org/security/known-vulnerabilities/thunderbird20.html#thunderbird18.104.22.168 Note: after the updated packages are installed, Thunderbird must be restarted for the update to take effect. ChangeLog: * Mon Jan 5 2009 Christopher Aillon 22.214.171.124-1 - Update to 126.96.36.199 * Wed Nov 19 2008 Christopher Aillon 188.8.131.52-1 - Update to 184.108.40.206