This isn't an ubuntu-docs issue. The instructions seem to have suggested that this bug should have been filed against "update-manager", so I'll change it.
** Package changed: ubuntu-docs (Ubuntu) => update-manager (Ubuntu) -- You received this bug notification because you are a member of Documentation Packages, which is subscribed to ubuntu-docs in Ubuntu. https://bugs.launchpad.net/bugs/1230156 Title: not able to upgrade ubuntu. A message occurs as follows: E:Dynamic MMap ran out of room. Please increase the size of APT::Cache-Limit. Current value: 25165824. (man 5 apt.conf), E:Error occurred while processing r-base-dev (NewVersion1), E:Problem with MergeList /var/lib/apt/lists/archive.ubuntu .com_ubuntu_dists_lucid_universe_binary-i386_Packages, E:The package lists or status file could not be parsed or opened.' Status in “update-manager” package in Ubuntu: New Bug description: error shown is: 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:Dynamic MMap ran out of room. Please increase the size of APT ::Cache-Limit. Current value: 25165824. (man 5 apt.conf), E:Error occurred while processing r-base-dev (NewVersion1), E:Problem with MergeList /var/lib/apt/lists/archive.ubuntu .com_ubuntu_dists_lucid_universe_binary-i386_Packages, E:The package lists or status file could not be parsed or opened.' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1230156/+subscriptions -- Mailing list: https://launchpad.net/~documentation-packages Post to : documentation-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~documentation-packages More help : https://help.launchpad.net/ListHelp