[Bug 1530662] [NEW] update kubuntu to R12.04

[adh]

Public bug reported:

Error by some package to check authenticity

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1530662

Title:
  update kubuntu to R12.04

Status in update-manager package in Ubuntu:
  New

Bug description:
  Error by some package to check authenticity

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