Ubuntu Update Manager Hash Sum mismatch

Does:

sudo fuser -vvv /var/lib/dpkg/lock
sudo rm /var/lib/apt/lists/lock
sudo cp -arf /var/lib/dpkg /var/lib/dpkg.backup
sudo cp /var/lib/dpkg/status-old /var/lib/dpkg/status
sudo cp /var/lib/dpkg/available-old /var/lib/dpkg/available
sudo rm -rf /var/lib/dpkg/updates/*
sudo rm -rf /var/lib/apt/lists
sudo rm /var/cache/apt/*.bin
sudo mkdir /var/lib/apt/lists
sudo mkdir /var/lib/apt/lists/partial
LANG=C;sudo apt-get clean
LANG=C;sudo apt-get autoclean
LANG=C;sudo apt-get --purge autoremove
LANG=C;sudo apt-get update -o APT::Cache-Limit=25165824
sudo dpkg --clear-avail
sudo dpkg --configure -a
LANG=C;sudo apt-get -f install
LANG=C;sudo apt-get --fix-missing install
LANG=C;sudo apt-get update -o APT::Cache-Limit=25165824 && sudo apt-get dist-upgrade

Help?

no big deal. it happens to me once in awhile. i just wait awhile then try updating again and everything is honky dorey.

Yep. It's totally fine now! Thanks!

Begone!

Im just performed a fresh installation, and:

$ sudo apt-get update
...
Ign http://it.archive.ubuntu.com natty-updates/restricted Translation-en
Ign http://it.archive.ubuntu.com natty-updates/universe Translation-en_US
Ign http://it.archive.ubuntu.com natty-updates/universe Translation-en
Fetched 3 B in 24s (0 B/s)
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/it.archive.ubuntu.com_ubuntu_dists_natty-updates_main_source_Sources Hash Sum mismatch

W: Failed to fetch bzip2:/var/lib/apt/lists/partial/it.archive.ubuntu.com_ubuntu_dists_natty-updates_main_binary-amd64_Packages Hash Sum mismatch

W: Failed to fetch gzip:/var/lib/apt/lists/partial/it.archive.ubuntu.com_ubuntu_dists_natty-updates_universe_binary-amd64_Packages Hash Sum mismatch

E: Some index files failed to download. They have been ignored, or old ones used instead.

NOTE: I ve used an aptcacher during the installation

Did you try my code above ?

I will.

I was referring to the initial "Not sure if this is a bug" .

I'm using Ubuntu 12.04 LTS (Precise Pangolin) Beta 2.

W: Klarte ikke å skaffe bzip2:/var/lib/apt/lists/partial/no.archive.ubuntu.com_ubuntu_dists_precise_universe_binary-i386_Packages Hashsummen stemmer ikke

The code I gave will sort that

As "actionparsnip (andrew-woodhead666)" said the code did the trick.

Thankyou

(I had the error "Manager Hash Sum mismatch" after a fresh install of Ubuntu 12.04.1, and thanks to the above code it was solved) )

Thanks "actionparsnip (andrew-woodhead666)", it worked for me.

I had the same problem of a hash sum mismatch - followed the steps in comment #1, but came up against a cache error. If it's useful for anyone else, I changed the two lines that read "APT::Cache-Limit=25165824" to read "APT::Cache-Limit=0" (which is the default according to the man page ie. no limit). This solved the cache error problem and thus solved the initial hash sum mismatch.

I have a similar problem, I have followed Andrew's instruction but have not succeeded yet.

W: Failed to fetch bzip2:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_raring_main_binary-i386_Packages Hash Sum mismatch

W: Failed to fetch bzip2:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_raring_universe_binary-i386_Packages Hash Sum mismatch

E: Some index files failed to download. They have been ignored, or old ones used instead.

UPDATED: I have changed my repo's server from Ubuntu's main server to another server and the problem is gone.