I tried to do an update to my system (12.04 LTA 64bit, on ACER aspire V5) got this:

Could not initialize the package information

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/security.ubuntu.com_ubuntu_dists_precise-security_main_binary-i386_Packages,
E:The package lists or status file could not be parsed or opened.

Now What?

marked as duplicate by Richard, Avinash Raj, Lucio, Eric Carvalho, Braiam Apr 25 '14 at 19:59

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Please do:

sudo rm /var/lib/apt/lists/* -vf

The first command will remove the damaged list and when you run the second command it will replace it with a new list.

sudo apt-get update

all should be fixed.

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