Fedora 14 has reached it's end of life on 9th December

As of 09 December 2011, Fedora 14 has reached its end of life for
updates and support. No further updates, including security updates,
will be available for Fedora 14. A previous reminder was sent on
November 8th (0).

Fedora 15 will continue to receive updates until approximately one
month after the release of Fedora 17. The maintenance schedule of
Fedora releases is documented on the Fedora Project wiki (1). The
Fedora Project wiki also contains instructions (2) on how to upgrade
from a previous release of Fedora to a version receiving updates.

Dennis

(0) http://lists.fedoraproject.org/pipermail/announce/2011-November/003010.html
(1) https://fedoraproject.org/wiki/Fedora_Release_Life_Cycle#Maintenance_Schedule
(2) http://fedoraproject.org/wiki/DistributionUpgrades