Error with the "Update manager"

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http://askubuntu.com – I got this when after finishing the usual updates and i don't know how to deal with: **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/archive.ubuntu.com_ubuntu_dists_quantal-proposed_main_i18n_Translation-en, E:The package lists or status file could not be parsed or opened** (HowTos)