Upgrading and Updating Problems!!

[ronnowoy]

I am unable to upgrade my system due to this message (attached) that I have a Configuration issue with a missing header. Please assist and help me figure this out. Thank you.

[ronnowoy]

Here Is a better Snapshot.

[ronnowoy]

And Another.

[vinnywright]

do in a terminal

sudo apt-get update

this should update the info for available packages ,,,,,,it may error out if so post the error,it may be different.
have you added any third party package repos and /or messed with or changed the /etc/apt/sources.list ?

if you get no error with the apt-get update then do

sudo apt-get dist-upgrade

this dose not upgrade you to the next distribution it just allows for removing and upgrading the installed packages to their next ver. if available for your current distribution , if error's post them.

VINNY

[ronnowoy]

These are the following errors that I get in terminal;

Hit http://archive.ubuntu.com precise-security/main Translation-en
Hit http://archive.ubuntu.com precise-security/multiverse Translation-en
Hit http://archive.ubuntu.com precise-security/restricted Translation-en
Hit http://archive.ubuntu.com precise-security/universe Translation-en
Fetched 3,225 kB in 7s (426 kB/s)
Reading package lists... Error!
W: GPG error: http://archive.ubuntu.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: GPG error: http://ppa.launchpad.net precise Release: The following signatures were invalid: BADSIG 497A0F381F691896 Launchpad compholio
W: GPG error: http://ppa.launchpad.net precise Release: The following signatures were invalid: BADSIG 2836CB0A8AC93F7A Launchpad Kubuntu Updates
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_precise_restricted _binary-amd64_Packages
E: The package lists or status file could not be parsed or opened.

[SteveRiley]

Clean up:

sudo apt-get clean

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

sudo rm -rfv /var/lib/apt/keyrings/*

sudo apt-get install --reinstall ubuntu-keyring ubuntu-extras-keyring

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5 497A0F381F691896 2836CB0A8AC93F7A

Now try updating your package list and upgrading your software:

sudo apt-get update

sudo apt-get dist-upgrade