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Fedora 20 “Heisenbug” Reached End of Life, Please Upgrade to Fedora 22 Linux

We are urging all users that still run the Fedora 20 distribution to backup all of their data and upgrade to the Fedora 21 or Fedora 22 releases, which are still supported by the Fedora Project with software updated and bugfixes for a few more months. If you want to upgrade to a newer, supported Fedora Linux operating system, please use the FedUp tool.