Update Manager Not working Fail to Download Repository Information

Posted by user51564 on Ask Ubuntu See other posts from Ask Ubuntu or by user51564
Published on 2012-03-21T22:49:17Z Indexed on 2012/03/21 23:40 UTC
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repository

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connection

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download

When I try to update, I get this error:

Failed to Download your repository information Check your internet connection

W:GPG error: http ://ppa.launchpad.net oneiric Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4874D3686E80C6B7, W:Failed to fetch http://ppa.launchpad.net/pmcenery/ppa/ubuntu/dists/oneiric/main/source/Sources 404 Not Found W:Failed to fetch http://ppa.launchpad.net/pmcenery/ppa/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found E:Some index files failed to download. They have been ignored, or old ones used instead.

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