I have been having this problem for some time now and I still haven't found a solution. Everytime I try to update or install new apps I get an error. When I run sudo apt-get update into the terminal all I get is this. Does anyone know how to fix this problem? I am running Ubuntu 11.10 64-bit

gislikarl@gislikarl-ubuntu:~$ sudo apt-get update
[sudo] password for gislikarl:
Ign cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012) dists/oneiric/main/binary-i386/ InRelease
Ign cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012) dists/oneiric/main/binary-i386/ Release.gpg
Ign cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012) dists/oneiric/main/binary-i386/ Release
Err cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012) dists/oneiric/main/binary-i386/ Packages
Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Ign cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012) dists/oneiric/main/binary-i386/ Translation-en_US
Ign cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012) dists/oneiric/main/binary-i386/ Translation-en
Ign http://speglar.simnet.is oneiric InRelease
Ign http://archive.canonical.com oneiric InRelease
Ign http://extras.ubuntu.com oneiric InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Ign http://dl.google.com stable InRelease
Hit http://archive.canonical.com oneiric Release.gpg
Ign http://deb.opera.com stable InRelease
Ign http://deb.opera.com stable InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Hit http://extras.ubuntu.com oneiric Release.gpg
Ign http://ppa.launchpad.net oneiric InRelease
Ign http://ppa.launchpad.net oneiric Release.gpg
Hit http://ppa.launchpad.net oneiric Release.gpg
Hit http://packages.medibuntu.org natty InRelease
Hit http://archive.canonical.com oneiric Release
Hit http://extras.ubuntu.com oneiric Release
Get:1 http://ppa.launchpad.net oneiric Release.gpg [316 B]
Hit http://deb.opera.com stable Release.gpg
Ign http://ppa.launchpad.net oneiric Release.gpg
Hit http://archive.canonical.com oneiric/partner Sources
Hit http://extras.ubuntu.com oneiric/main Sources
Get:2 http://ppa.launchpad.net oneiric Release.gpg [316 B]
Hit http://archive.canonical.com oneiric/partner amd64 Packages
Hit http://deb.opera.com stable Release.gpg
Ign http://ppa.launchpad.net oneiric Release
Hit http://ppa.launchpad.net oneiric Release
Hit http://ppa.launchpad.net oneiric Release
Ign http://ppa.launchpad.net oneiric Release
Hit http://archive.canonical.com oneiric/partner i386 Packages
Hit http://packages.medibuntu.org natty/free Sources
Ign http://ppa.launchpad.net oneiric Release
Hit http://ppa.launchpad.net oneiric Release
Ign http://ppa.launchpad.net oneiric Release
Hit http://deb.opera.com stable Release
Ign http://archive.canonical.com oneiric/partner TranslationIndex
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://ppa.launchpad.net oneiric/main Sources
Hit http://ppa.launchpad.net oneiric/main amd64 Packages
Hit http://ppa.launchpad.net oneiric/main i386 Packages
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://deb.opera.com stable Release
Ign http://ppa.launchpad.net oneiric/main Sources/DiffIndex
Ign http://ppa.launchpad.net oneiric/main amd64 Packages/DiffIndex
Ign http://ppa.launchpad.net oneiric/main i386 Packages/DiffIndex
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://extras.ubuntu.com oneiric/main amd64 Packages
Ign http://ppa.launchpad.net oneiric/main Sources/DiffIndex
Ign http://ppa.launchpad.net oneiric/main amd64 Packages/DiffIndex
Hit http://packages.medibuntu.org natty/non-free Sources
Hit http://extras.ubuntu.com oneiric/main i386 Packages
Ign http://extras.ubuntu.com oneiric/main TranslationIndex
Hit http://deb.opera.com stable/non-free amd64 Packages
Hit http://deb.opera.com stable/non-free i386 Packages
Ign http://deb.opera.com stable/non-free TranslationIndex
Ign http://ppa.launchpad.net oneiric/main i386 Packages/DiffIndex
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://deb.opera.com stable/non-free amd64 Packages
Hit http://deb.opera.com stable/non-free i386 Packages
Ign http://deb.opera.com stable/non-free TranslationIndex
Hit http://ppa.launchpad.net oneiric/main Sources
Ign http://dl.google.com stable InRelease
Hit http://ppa.launchpad.net oneiric/main amd64 Packages
Hit http://ppa.launchpad.net oneiric/main i386 Packages
Hit http://packages.medibuntu.org natty/free amd64 Packages
Hit http://ppa.launchpad.net oneiric/main Sources
Get:3 http://dl.google.com stable Release.gpg [198 B]
Hit http://ppa.launchpad.net oneiric/main amd64 Packages
Hit http://ppa.launchpad.net oneiric/main i386 Packages
Ign http://archive.canonical.com oneiric/partner Translation-en_US
Hit http://packages.medibuntu.org natty/non-free amd64 Packages
Get:4 http://dl.google.com stable Release.gpg [198 B]
Ign http://archive.canonical.com oneiric/partner Translation-en
Ign http://extras.ubuntu.com oneiric/main Translation-en_US
Get:5 http://dl.google.com stable Release [1,347 B]
Err http://ppa.launchpad.net oneiric/main Sources
404 Not Found
Err http://ppa.launchpad.net oneiric/main amd64 Packages
404 Not Found
Hit http://packages.medibuntu.org natty/free i386 Packages
Ign http://extras.ubuntu.com oneiric/main Translation-en
Err http://ppa.launchpad.net oneiric/main i386 Packages
404 Not Found
Err http://ppa.launchpad.net oneiric/main Sources
404 Not Found
Err http://ppa.launchpad.net oneiric/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net oneiric/main i386 Packages
404 Not Found
Hit http://packages.medibuntu.org natty/non-free i386 Packages
Ign http://packages.medibuntu.org natty/free TranslationIndex
Ign http://deb.opera.com stable/non-free Translation-en_US
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Ign http://deb.opera.com stable/non-free Translation-en
Ign http://ppa.launchpad.net oneiric/main Translation-en
Ign http://deb.opera.com stable/non-free Translation-en_US
Ign http://packages.medibuntu.org natty/non-free TranslationIndex
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Ign http://deb.opera.com stable/non-free Translation-en
Ign http://ppa.launchpad.net oneiric/main Translation-en
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Ign http://ppa.launchpad.net oneiric/main Translation-en
Ign http://speglar.simnet.is oneiric-updates InRelease
Ign http://speglar.simnet.is oneiric-backports InRelease
Ign http://speglar.simnet.is oneiric-security InRelease
Hit http://speglar.simnet.is oneiric Release.gpg
Hit http://speglar.simnet.is oneiric-updates Release.gpg
Hit http://speglar.simnet.is oneiric-backports Release.gpg
Hit http://speglar.simnet.is oneiric-security Release.gpg
Hit http://speglar.simnet.is oneiric Release
Hit http://speglar.simnet.is oneiric-updates Release
Hit http://speglar.simnet.is oneiric-backports Release
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Hit http://speglar.simnet.is oneiric-security Release
Hit http://speglar.simnet.is oneiric/main Sources
Hit http://speglar.simnet.is oneiric/restricted Sources
Hit http://speglar.simnet.is oneiric/universe Sources
Hit http://speglar.simnet.is oneiric/multiverse Sources
Hit http://speglar.simnet.is oneiric/main amd64 Packages
Hit http://speglar.simnet.is oneiric/restricted amd64 Packages
Ign http://ppa.launchpad.net oneiric/main Translation-en
Hit http://speglar.simnet.is oneiric/universe amd64 Packages
Hit http://speglar.simnet.is oneiric/multiverse amd64 Packages
Hit http://speglar.simnet.is oneiric/main i386 Packages
Hit http://speglar.simnet.is oneiric/restricted i386 Packages
Hit http://speglar.simnet.is oneiric/universe i386 Packages
Hit http://speglar.simnet.is oneiric/multiverse i386 Packages
Hit http://speglar.simnet.is oneiric/main TranslationIndex
Hit http://speglar.simnet.is oneiric/multiverse TranslationIndex
Hit http://speglar.simnet.is oneiric/restricted TranslationIndex
Hit http://speglar.simnet.is oneiric/universe TranslationIndex
Hit http://speglar.simnet.is oneiric-updates/main Sources
Hit http://speglar.simnet.is oneiric-updates/restricted Sources
Hit http://speglar.simnet.is oneiric-updates/universe Sources
Hit http://speglar.simnet.is oneiric-updates/multiverse Sources
Hit http://speglar.simnet.is oneiric-updates/main amd64 Packages
Ign http://ppa.launchpad.net oneiric/main Translation-en_US
Hit http://speglar.simnet.is oneiric-updates/restricted amd64 Packages
Hit http://speglar.simnet.is oneiric-updates/universe amd64 Packages
Hit http://speglar.simnet.is oneiric-updates/multiverse amd64 Packages
Hit http://speglar.simnet.is oneiric-updates/main i386 Packages
Hit http://speglar.simnet.is oneiric-updates/restricted i386 Packages
Hit http://speglar.simnet.is oneiric-updates/universe i386 Packages
Hit http://speglar.simnet.is oneiric-updates/multiverse i386 Packages
Hit http://speglar.simnet.is oneiric-updates/main TranslationIndex
Hit http://speglar.simnet.is oneiric-updates/multiverse TranslationIndex
Hit http://speglar.simnet.is oneiric-updates/restricted TranslationIndex
Hit http://speglar.simnet.is oneiric-updates/universe TranslationIndex
Hit http://speglar.simnet.is oneiric-backports/main Sources
Hit http://speglar.simnet.is oneiric-backports/restricted Sources
Hit http://speglar.simnet.is oneiric-backports/universe Sources
Ign http://ppa.launchpad.net oneiric/main Translation-en
Hit http://speglar.simnet.is oneiric-backports/multiverse Sources
Hit http://speglar.simnet.is oneiric-backports/main amd64 Packages
Hit http://speglar.simnet.is oneiric-backports/restricted amd64 Packages
Hit http://speglar.simnet.is oneiric-backports/universe amd64 Packages
Hit http://speglar.simnet.is oneiric-backports/multiverse amd64 Packages
Hit http://speglar.simnet.is oneiric-backports/main i386 Packages
Hit http://speglar.simnet.is oneiric-backports/restricted i386 Packages
Hit http://speglar.simnet.is oneiric-backports/universe i386 Packages
Hit http://speglar.simnet.is oneiric-backports/multiverse i386 Packages
Hit http://speglar.simnet.is oneiric-backports/main TranslationIndex
Hit http://speglar.simnet.is oneiric-backports/multiverse TranslationIndex
Hit http://speglar.simnet.is oneiric-backports/restricted TranslationIndex
Hit http://speglar.simnet.is oneiric-backports/universe TranslationIndex
Hit http://speglar.simnet.is oneiric-security/main Sources
Hit http://speglar.simnet.is oneiric-security/restricted Sources
Hit http://speglar.simnet.is oneiric-security/universe Sources
Hit http://speglar.simnet.is oneiric-security/multiverse Sources
Hit http://speglar.simnet.is oneiric-security/main amd64 Packages
Hit http://speglar.simnet.is oneiric-security/restricted amd64 Packages
Hit http://speglar.simnet.is oneiric-security/universe amd64 Packages
Hit http://speglar.simnet.is oneiric-security/multiverse amd64 Packages
Hit http://speglar.simnet.is oneiric-security/main i386 Packages
Hit http://speglar.simnet.is oneiric-security/restricted i386 Packages
Hit http://speglar.simnet.is oneiric-security/universe i386 Packages
Hit http://speglar.simnet.is oneiric-security/multiverse i386 Packages
Hit http://speglar.simnet.is oneiric-security/main TranslationIndex
Hit http://speglar.simnet.is oneiric-security/multiverse TranslationIndex
Hit http://speglar.simnet.is oneiric-security/restricted TranslationIndex
Hit http://speglar.simnet.is oneiric-security/universe TranslationIndex
Hit http://speglar.simnet.is oneiric/main Translation-en
Hit http://speglar.simnet.is oneiric/multiverse Translation-en
Hit http://speglar.simnet.is oneiric/restricted Translation-en
Hit http://speglar.simnet.is oneiric/universe Translation-en
Hit http://speglar.simnet.is oneiric-updates/main Translation-en
Hit http://speglar.simnet.is oneiric-updates/multiverse Translation-en
Hit http://speglar.simnet.is oneiric-updates/restricted Translation-en
Hit http://speglar.simnet.is oneiric-updates/universe Translation-en
Hit http://speglar.simnet.is oneiric-backports/main Translation-en
Hit http://speglar.simnet.is oneiric-backports/multiverse Translation-en
Hit http://speglar.simnet.is oneiric-backports/restricted Translation-en
Hit http://speglar.simnet.is oneiric-backports/universe Translation-en
Hit http://speglar.simnet.is oneiric-security/main Translation-en
Hit http://speglar.simnet.is oneiric-security/multiverse Translation-en
Hit http://speglar.simnet.is oneiric-security/restricted Translation-en
Hit http://speglar.simnet.is oneiric-security/universe Translation-en
Ign http://packages.medibuntu.org natty/free Translation-en_US
Ign http://packages.medibuntu.org natty/free Translation-en
Ign http://packages.medibuntu.org natty/non-free Translation-en_US
Ign http://packages.medibuntu.org natty/non-free Translation-en
Get:6 http://dl.google.com stable Release [1,347 B]
Get:7 http://dl.google.com stable/main amd64 Packages [1,198 B]
Get:8 http://dl.google.com stable/main i386 Packages [1,208 B]
Ign http://dl.google.com stable/main TranslationIndex
Get:9 http://dl.google.com stable/main amd64 Packages [764 B]
Get:10 http://dl.google.com stable/main i386 Packages [779 B]
Ign http://dl.google.com stable/main TranslationIndex
Ign http://dl.google.com stable/main Translation-en_US
Ign http://dl.google.com stable/main Translation-en
Ign http://dl.google.com stable/main Translation-en_US
Ign http://dl.google.com stable/main Translation-en
Fetched 7,671 B in 17s (442 B/s)
W: GPG error: http://ppa.launchpad.net oneiric Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7815DD7DC69E8E92
W: GPG error: http://ppa.launchpad.net oneiric Release: The following signatures were invalid: BADSIG C2518248EEA14886 Launchpad VLC
W: Failed to fetch cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)/dists/oneiric/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs

W: Failed to fetch http://ppa.launchpad.net/jtaylor/kee...source/Sources 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/jtaylor/kee...amd64/Packages 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/jtaylor/kee...-i386/Packages 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/team-xbmc/p...source/Sources 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/team-xbmc/p...amd64/Packages 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/team-xbmc/p...-i386/Packages 404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.
gislikarl@gislikarl-ubuntu:~$