Guys...I have a problem with my update manager. I'm a new ubuntu user.
Right now I'm having this error and I can't update my OS:
Fetched 422kB in 8s (50.6kB/s)
W: GPG error: http://archive.canonical.com hardy Release: The following
signatures couldn't be verified because the public key is not available:
NO_PUBKEY 40976EAF437D05B5
W: GPG error: http://packages.medibuntu.org hardy Release: The following
signatures couldn't be verified because the public key is not available:
NO_PUBKEY 2EBC26B60C5A2783
W: GPG error: http://archive.ubuntu.com hardy Release: The following signatures
couldn't be verified because the public key is not available: NO_PUBKEY
40976EAF437D05B5
W: GPG error: http://us.archive.ubuntu.com hardy Release: The following
signatures couldn't be verified because the public key is not available:
NO_PUBKEY 40976EAF437D05B5
W: GPG error: http://us.archive.ubuntu.com hardy-updates Release: The following
signatures couldn't be verified because the public key is not available:
NO_PUBKEY 40976EAF437D05B5
W: GPG error: http://us.archive.ubuntu.com hardy-backports Release: The
following signatures couldn't be verified because the public key is not
available: NO_PUBKEY 40976EAF437D05B5
W: GPG error: http://us.archive.ubuntu.com hardy-security Release: The
following signatures couldn't be verified because the public key is not
available: NO_PUBKEY 40976EAF437D05B5
W: GPG error: http://us.archive.ubuntu.com hardy-proposed Release: The
following signatures couldn't be verified because the public key is not
available: NO_PUBKEY 40976EAF437D05B5
W: Failed to fetch file:/var/cache/prevu/hardy-debs/./Packages.gz File not
found
E: Some index files failed to download, they have been ignored, or old
ones used instead.
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GPG error with apt-get (BADSIG 40976EAF437D05B5)
https://bugs.launchpad.net/bugs/24061
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