[Bug 1010998] Re: having trouble updating ... possibly multiarch related

[Progressive]

W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/quantal/main/binary-amd64/Packages  404  Not Found
, E:Some index files failed to download. They have been ignored, or old ones used instead.

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https://bugs.launchpad.net/bugs/1010998

Title:
  having trouble updating ... possibly multiarch related

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  using kubuntu 12.04 64 bit trying to upgrade to 12.10

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