[Bug 791696] Re: E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_lucid-backports_main_binary-i386_Packages E: The package lists or status file could not be parsed or opened. E: _cache->open() failed, please report.

[PMPope]

** Attachment added: "This is the pop-up window I receive from Synaptic"
   https://bugs.launchpad.net/bugs/791696/+attachment/2151714/+files/update-managerbug602.png

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https://bugs.launchpad.net/bugs/791696

Title:
  E: Encountered a section with no Package: header E: Problem with
  MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_lucid-
  backports_main_binary-i386_Packages E: The package lists or status
  file could not be parsed or opened. E: _cache->open() failed, please
  report.

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

Bug description:
  Binary package hint: update-manager

  This is a bug affecting my Update Manager & my Synaptic Package Manager.
  Additional information:

  Ubuntu 11.04
  ---
  E: Encountered a section with no Package: header
  E: Problem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_lucid-backports_main_binary-i386_Packages
  E: The package lists or status file could not be parsed or opened.
  ---
  I am unable to run system upgrade or install software.
  This error occurs any time I open either of the previously mentioned package installers.