update-manager: initialycing of paketinformation crashed

[Sredna Nets]

'W:Duplicate sources.list entry cdrom://Ubuntu 12.04.2 LTS _Precise Pangolin_ - Release amd64 (20130213)/ precise/main i386 Packages (/var/lib/apt/lists/Ubuntu%2012.04.2%20LTS%20%5fPrecise%20Pangolin%5f%20-%20Release%20amd64%20(20130213)_dists_precise_main_binary-i386_Packages), W:Duplicate sources.list entry cdrom://Ubuntu 12.04.2 LTS _Precise Pangolin_ - Release amd64 (20130213)/ precise/restricted i386 Packages (/var/lib/apt/lists/Ubuntu%2012.04.2%20LTS%20%5fPrecise%20Pangolin%5f%20-%20Release%20amd64%20(20130213)_dists_precise_restricted_binary-i386_Packages), E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/extras.ubuntu.com_ubuntu_dists_precise_main_i18n_Translation-de, E:Die Paketliste oder die Statusdatei konnte nicht eingelesen oder geöffnet werden.'

What should I do to get the update manager back to running?
Best regards, Sredna

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your bug report it seems that you are experiencing bug 346386. This issue happens when you have tried to update your package information when you are a network that didn't return the right files. This issue can be cleaned up by using the following commands in a terminal:

1.) sudo rm /var/lib/apt/lists/*
2.) sudo apt-get update

Thanks and good luck!

[This is an automated message. I apologize if it reached you inappropriately; please reopen the bug task if it was incorrect.]