[Bug 790371] Re: U 11.04 Update Manager fails to obtain update package

[Teddy]

New error messages:

Tried to run package manager.  This is the error message text:

E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_natty_main_binary-amd64_Packages
E: The package lists or status file could not be parsed or opened.
E: _cache->open() failed, please report.

When clicking on "check for updates," the app appears to look for
downloads, then displays the following:

E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_natty_main_binary-amd64_Packages
E: The package lists or status file could not be parsed or opened.
E: _cache->open() failed, please report.

Running apt-get in terminal yields this result:

Reading package lists... Error!
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_natty_main_binary-amd64_Packages
E: The package lists or status file could not be parsed or opened.

"Installed packages have unmet dependencies" is another hint given by a
mouse-over of the error icon.

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https://bugs.launchpad.net/bugs/790371

Title:
  U 11.04 Update Manager fails to obtain update package

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

Bug description:
  Binary package hint: update-manager

  Starting Update Manager in U 11.04 brings up the following error
  message.  Clicking on the close button terminates Update Manager.

  Update-manager
  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/us.archive.ubuntu.com_ubuntu_dists_natty_main_binary-amd64_Packages,
  e:The package lists or status file could not be parsed or opened