MergeList error in Update manager [closed]

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http://askubuntu.com – Possible Duplicate: How do I fix a “Problem with MergeList” error when trying to do an update? when I try to update or install any software this message shows up: 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/eg.archive.ubuntu.com_ubuntu_dists_precise_main_binary-i386_Packages, E:The package lists or status file could not be parsed or opened.' (HowTos)