[Bug 1129443] [NEW] update manager crashes when i "show updates"

[bill va]

*** This bug is a duplicate of bug 346386 ***
    https://bugs.launchpad.net/bugs/346386

Public bug reported:

running ubuntu 12.04 LTS.  when i try to "show updates" i get an error
message:

"
Could not initialize the package information

An unresolvable problem occurred while initializing the package
information.

Please report this bug against the 'update-manager' package and include
the following error message:

'E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_main_i18n_Translation-en, E:The package lists or status file could not be parsed or opened.'
"

when i try to install updates an error message says:

"
Failed to load the package list

This is a serious problem. Try again later. If this problem appears
again, please report an error to the developers.

E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_main_i18n_Translation-en, E:The package lists or status file could not be parsed or opened.
"

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


** Tags: bot-comment

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https://bugs.launchpad.net/bugs/1129443

Title:
  update manager crashes when i "show updates"

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

Bug description:
  running ubuntu 12.04 LTS.  when i try to "show updates" i get an error
  message:

  "
  Could not initialize the package information

  An unresolvable problem occurred while initializing the package
  information.

  Please report this bug against the 'update-manager' package and
  include the following error message:

  'E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_main_i18n_Translation-en, E:The package lists or status file could not be parsed or opened.'
  "

  when i try to install updates an error message says:

  "
  Failed to load the package list

  This is a serious problem. Try again later. If this problem appears
  again, please report an error to the developers.

  E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_main_i18n_Translation-en, E:The package lists or status file could not be parsed or opened.
  "

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