Ubuntu
ubuntu-extras-keyring package

  1. Maverick (10.10)
  2. Bug #650525
  3. Comment #16

Comment 16 for bug 650525

Revision history for this message
Colin Watson (cjwatson) wrote : Re: [Bug 650525] Re: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/maverick/Release ; missing key

  sudo apt-get --reinstall install ubuntu-extras-keyring

... ought to do it.