this is the error i keep gettingCode:Ign cdrom://Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release i386 (20130820.1) precise/main TranslationIndex Ign cdrom://Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release i386 (20130820.1) precise/restricted TranslationIndex Ign cdrom://Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release i386 (20130820.1) precise/main Translation-en_US Ign cdrom://Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release i386 (20130820.1) precise/main Translation-en Ign cdrom://Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release i386 (20130820.1) precise/restricted Translation-en_US Ign cdrom://Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release i386 (20130820.1) precise/restricted Translation-en Hit http://repo.steampowered.com precise Release.gpg Hit http://repo.steampowered.com precise Release Hit http://security.ubuntu.com precise-security Release.gpg Hit http://repo.steampowered.com precise/steam Sources Hit http://security.ubuntu.com precise-security Release Hit http://archive.canonical.com precise Release.gpg Hit http://us.archive.ubuntu.com precise Release.gpg Hit http://us.archive.ubuntu.com precise-updates Release.gpg Hit http://us.archive.ubuntu.com precise-backports Release.gpg Hit http://repo.steampowered.com precise/steam i386 Packages Hit http://security.ubuntu.com precise-security/main Sources Hit http://extras.ubuntu.com precise Release.gpg Hit http://ppa.launchpad.net precise Release.gpg Hit http://us.archive.ubuntu.com precise Release Hit http://us.archive.ubuntu.com precise-updates Release Hit http://security.ubuntu.com precise-security/restricted Sources Hit http://security.ubuntu.com precise-security/universe Sources Hit http://security.ubuntu.com precise-security/multiverse Sources Hit http://security.ubuntu.com precise-security/main i386 Packages Hit http://security.ubuntu.com precise-security/restricted i386 Packages Hit http://archive.canonical.com precise Release Hit http://security.ubuntu.com precise-security/universe i386 Packages Hit http://security.ubuntu.com precise-security/multiverse i386 Packages Hit http://security.ubuntu.com precise-security/main TranslationIndex Hit http://security.ubuntu.com precise-security/multiverse TranslationIndex Hit http://security.ubuntu.com precise-security/restricted TranslationIndex Ign http://repo.steampowered.com precise/steam TranslationIndex Hit http://us.archive.ubuntu.com precise-backports Release Hit http://extras.ubuntu.com precise Release Hit http://security.ubuntu.com precise-security/universe TranslationIndex Hit http://ppa.launchpad.net precise Release Hit http://us.archive.ubuntu.com precise/main Sources Hit http://us.archive.ubuntu.com precise/restricted Sources Hit http://us.archive.ubuntu.com precise/multiverse Sources Hit http://us.archive.ubuntu.com precise/main i386 Packages Hit http://us.archive.ubuntu.com precise/restricted i386 Packages Hit http://us.archive.ubuntu.com precise/multiverse i386 Packages Hit http://us.archive.ubuntu.com precise/main TranslationIndex Hit http://archive.canonical.com precise/partner Sources Hit http://security.ubuntu.com precise-security/main Translation-en Hit http://security.ubuntu.com precise-security/multiverse Translation-en Hit http://extras.ubuntu.com precise/main Sources Hit http://us.archive.ubuntu.com precise/multiverse TranslationIndex Hit http://us.archive.ubuntu.com precise/restricted TranslationIndex Hit http://us.archive.ubuntu.com precise/universe TranslationIndex Hit http://us.archive.ubuntu.com precise-updates/main Sources Hit http://us.archive.ubuntu.com precise-updates/restricted Sources Hit http://us.archive.ubuntu.com precise-updates/universe Sources Hit http://ppa.launchpad.net precise/main Sources Hit http://security.ubuntu.com precise-security/restricted Translation-en Hit http://archive.canonical.com precise/partner i386 Packages Ign http://archive.canonical.com precise/partner TranslationIndex Hit http://us.archive.ubuntu.com precise-updates/multiverse Sources Hit http://us.archive.ubuntu.com precise-updates/main i386 Packages Hit http://us.archive.ubuntu.com precise-updates/restricted i386 Packages Hit http://us.archive.ubuntu.com precise-updates/universe i386 Packages Hit http://us.archive.ubuntu.com precise-updates/multiverse i386 Packages Hit http://us.archive.ubuntu.com precise-updates/main TranslationIndex Hit http://us.archive.ubuntu.com precise-updates/multiverse TranslationIndex Hit http://us.archive.ubuntu.com precise-updates/restricted TranslationIndex Hit http://us.archive.ubuntu.com precise-updates/universe TranslationIndex Hit http://security.ubuntu.com precise-security/universe Translation-en Hit http://extras.ubuntu.com precise/main i386 Packages Ign http://extras.ubuntu.com precise/main TranslationIndex Hit http://ppa.launchpad.net precise/main i386 Packages Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://us.archive.ubuntu.com precise-backports/main Sources Hit http://us.archive.ubuntu.com precise-backports/restricted Sources Hit http://us.archive.ubuntu.com precise-backports/universe Sources Hit http://us.archive.ubuntu.com precise-backports/multiverse Sources Hit http://us.archive.ubuntu.com precise-backports/main i386 Packages Hit http://us.archive.ubuntu.com precise-backports/restricted i386 Packages Hit http://us.archive.ubuntu.com precise-backports/universe i386 Packages Hit http://us.archive.ubuntu.com precise-backports/multiverse i386 Packages Hit http://us.archive.ubuntu.com precise-backports/main TranslationIndex Hit http://us.archive.ubuntu.com precise-backports/multiverse TranslationIndex Hit http://us.archive.ubuntu.com precise-backports/restricted TranslationIndex Hit http://us.archive.ubuntu.com precise-backports/universe TranslationIndex Hit https://private-ppa.launchpad.net precise Release.gpg Get:1 http://us.archive.ubuntu.com precise/universe Sources [6,239 kB] Hit https://private-ppa.launchpad.net precise Release.gpg Get:2 http://us.archive.ubuntu.com precise/universe i386 Packages [6,180 kB] Hit http://us.archive.ubuntu.com precise/main Translation-en Hit http://us.archive.ubuntu.com precise/multiverse Translation-en Hit http://us.archive.ubuntu.com precise/restricted Translation-en Hit http://us.archive.ubuntu.com precise/universe Translation-en Hit http://us.archive.ubuntu.com precise-updates/main Translation-en Hit http://us.archive.ubuntu.com precise-updates/multiverse Translation-en Hit http://us.archive.ubuntu.com precise-updates/restricted Translation-en Hit http://us.archive.ubuntu.com precise-updates/universe Translation-en Hit https://private-ppa.launchpad.net precise Release Hit http://us.archive.ubuntu.com precise-backports/main Translation-en Hit http://us.archive.ubuntu.com precise-backports/multiverse Translation-en Hit http://us.archive.ubuntu.com precise-backports/restricted Translation-en Hit http://us.archive.ubuntu.com precise-backports/universe Translation-en Err http://us.archive.ubuntu.com precise/universe Sources Ign http://repo.steampowered.com precise/steam Translation-en_US Err http://us.archive.ubuntu.com precise/universe Sources 404 Not Found [IP: 91.189.91.15 80] Ign http://repo.steampowered.com precise/steam Translation-en Hit https://private-ppa.launchpad.net precise Release Hit https://private-ppa.launchpad.net precise/main i386 Packages Ign http://archive.canonical.com precise/partner Translation-en_US Ign http://extras.ubuntu.com precise/main Translation-en_US Get:3 https://private-ppa.launchpad.net precise/main TranslationIndex [370 B] Ign https://private-ppa.launchpad.net precise/main TranslationIndex Ign http://archive.canonical.com precise/partner Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://extras.ubuntu.com precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en Hit https://private-ppa.launchpad.net precise/main i386 Packages Get:4 https://private-ppa.launchpad.net precise/main TranslationIndex [357 B] Ign https://private-ppa.launchpad.net precise/main TranslationIndex Ign https://private-ppa.launchpad.net precise/main Translation-en_US Ign https://private-ppa.launchpad.net precise/main Translation-en Ign https://private-ppa.launchpad.net precise/main Translation-en_US Ign https://private-ppa.launchpad.net precise/main Translation-en Fetched 2 B in 7s (0 B/s) W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...source/Sources 404 Not Found [IP: 91.189.91.15 80] W: Failed to fetch gzip:/var/lib/apt/lists/partial/us.archive.ubuntu.com_ubuntu_dists_precise_universe_binary-i386_Packages Hash Sum mismatch E: Some index files failed to download. They have been ignored, or old ones used instead.
please help!!!!
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