[ubuntu] Not Authenticated sources error

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http://ubuntuforums.org – I found the error posted several times, but nothing I'm doing repairs this. This occurs while attempting to download unrestricted extras from ubuntu software center. posting the sudo apt-get update result hoping someone can help. bonzai@ubuntu:~$ sudo apt-get update Ign http://dl.google.com stable InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://us.archive.ubuntu.com precise InRelease Ign http://security.ubuntu.com precise-security InRelease Ign h (Hardware)