[Bug 1095233] Re: Trying to update to Kubuntu 12.10 and get error message

[Brian Murray]

Somewhere in /etc/apt/sources.list or /etc/apt/sources.list.d/ you have
a reference to karmic-backports, and as karmic is no longer supported
the files listed in the description can not be found.  You'll need to
find and remove these references.

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https://bugs.launchpad.net/bugs/1095233

Title:
  Trying to update to Kubuntu 12.10 and get error message

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Invalid

Bug description:
   I can't upgrade to 12.10. I get the error message below at 94% of the
  way through the  "Setting new software channels" stage.

  I have a good network connection and can can connect to all other
  websites that I have tested without problem.

  Error message:
  W:Failed to fetch http://nz.archive.ubuntu.com/ubuntu/dists/karmic-backports/main/source/Sources  404  Not Found
  , W:Failed to fetch http://nz.archive.ubuntu.com/ubuntu/dists/karmic-backports/restricted/source/Sources  404  Not Found
  , W:Failed to fetch http://nz.archive.ubuntu.com/ubuntu/dists/karmic-backports/universe/source/Sources  404  Not Found
  , W:Failed to fetch http://nz.archive.ubuntu.com/ubuntu/dists/karmic-backports/multiverse/source/Sources  404  Not Found
  , E:Some index files failed to download. They have been ignored, or old ones used instead.

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