Possible Duplicate:
What is the easiest way to resolve apt-get BADSIG GPG errors?
Whenever I run apt-get update or apt-get install I get an error akin to the following:
W: GPG error: http://au.archive.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://au.archive.ubuntu.com oneiric-backports Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://extras.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 16126D3A3E5C1192 Ubuntu Extras Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/oneiric/Release
W: Some index files failed to download. They have been ignored, or old ones used instead.
I am skeptical about just removing the keys without replacement keys; so thought it best to ask here.
How do I replace the signatures; and what should I replace them with?
