For several days (after squeeze release), I have been getting the following error and can no longer run anything in apt, update or upgrading: Reading package lists... Error! E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/debian.co.il_debian_dists_testing_contrib_i18n_Translation- en E: The package lists or status file could not be parsed or opened. What to do about it