Software Center, update-manager, plugin finder virker ikke

[Solo]

Jeg har lige installeret ubuntu 11.04. Når jeg åbner Software Center i bliver applikationen ved med at være 'in progress' med den der skive som drejer rundt. Jeg kan ikke finde en løsning på problemet. Herudover lader det til at min update-manager heller ikke fungerer. Når jeg skriver sudo apt-get update i terminalen får jeg beskeden

Ign http://dk.archive.ubuntu.com natty InRelease
Ign http://dk.archive.ubuntu.com natty-updates InRelease
Ign http://extras.ubuntu.com natty InRelease
Hit http://dk.archive.ubuntu.com natty Release.gpg
Hit http://dk.archive.ubuntu.com natty-updates Release.gpg
Hit http://dk.archive.ubuntu.com natty Release
Hit http://extras.ubuntu.com natty Release.gpg
Ign http://security.ubuntu.com natty-security InRelease
Hit http://dk.archive.ubuntu.com natty-updates Release
Hit http://extras.ubuntu.com natty Release
Hit http://dk.archive.ubuntu.com natty/main Sources
Hit http://security.ubuntu.com natty-security Release.gpg
Hit http://dk.archive.ubuntu.com natty/restricted Sources
Hit http://dk.archive.ubuntu.com natty/universe Sources
Hit http://dk.archive.ubuntu.com natty/multiverse Sources
Hit http://dk.archive.ubuntu.com natty/main i386 Packages
Hit http://dk.archive.ubuntu.com natty/restricted i386 Packages
Hit http://dk.archive.ubuntu.com natty/universe i386 Packages
Hit http://dk.archive.ubuntu.com natty/multiverse i386 Packages
Ign http://dk.archive.ubuntu.com natty/main TranslationIndex
Ign http://dk.archive.ubuntu.com natty/multiverse TranslationIndex
Ign http://dk.archive.ubuntu.com natty/restricted TranslationIndex
Hit http://security.ubuntu.com natty-security Release
Ign http://dk.archive.ubuntu.com natty/universe TranslationIndex
Hit http://dk.archive.ubuntu.com natty-updates/main Sources
Hit http://dk.archive.ubuntu.com natty-updates/restricted Sources
Hit http://dk.archive.ubuntu.com natty-updates/universe Sources
Hit http://dk.archive.ubuntu.com natty-updates/multiverse Sources
Hit http://dk.archive.ubuntu.com natty-updates/main i386 Packages
Hit http://dk.archive.ubuntu.com natty-updates/restricted i386 Packages
Hit http://dk.archive.ubuntu.com natty-updates/universe i386 Packages
Hit http://dk.archive.ubuntu.com natty-updates/multiverse i386 Packages
Ign http://dk.archive.ubuntu.com natty-updates/main TranslationIndex
Hit http://extras.ubuntu.com natty/main Sources
Hit http://security.ubuntu.com natty-security/main Sources
Hit http://extras.ubuntu.com natty/main i386 Packages
Ign http://extras.ubuntu.com natty/main TranslationIndex
Hit http://security.ubuntu.com natty-security/restricted Sources
Hit http://security.ubuntu.com natty-security/universe Sources
Hit http://security.ubuntu.com natty-security/multiverse Sources
Hit http://security.ubuntu.com natty-security/main i386 Packages
Hit http://security.ubuntu.com natty-security/restricted i386 Packages
Ign http://dk.archive.ubuntu.com natty-updates/multiverse TranslationIndex
Ign http://dk.archive.ubuntu.com natty-updates/restricted TranslationIndex
Ign http://dk.archive.ubuntu.com natty-updates/universe TranslationIndex
Ign http://extras.ubuntu.com natty/main Translation-en_US
Ign http://extras.ubuntu.com natty/main Translation-en
Hit http://security.ubuntu.com natty-security/universe i386 Packages
Hit http://security.ubuntu.com natty-security/multiverse i386 Packages
Ign http://security.ubuntu.com natty-security/main TranslationIndex
Ign http://security.ubuntu.com natty-security/multiverse TranslationIndex
Ign http://security.ubuntu.com natty-security/restricted TranslationIndex
Ign http://security.ubuntu.com natty-security/universe TranslationIndex
Ign http://security.ubuntu.com natty-security/main Translation-en_US
Ign http://security.ubuntu.com natty-security/main Translation-en
Ign http://security.ubuntu.com natty-security/multiverse Translation-en_US
Ign http://security.ubuntu.com natty-security/multiverse Translation-en
Ign http://security.ubuntu.com natty-security/restricted Translation-en_US
Ign http://security.ubuntu.com natty-security/restricted Translation-en
Ign http://security.ubuntu.com natty-security/universe Translation-en_US
Ign http://security.ubuntu.com natty-security/universe Translation-en
Ign http://dk.archive.ubuntu.com natty/main Translation-en_US
Ign http://dk.archive.ubuntu.com natty/main Translation-en
Ign http://dk.archive.ubuntu.com natty/multiverse Translation-en_US
Ign http://dk.archive.ubuntu.com natty/multiverse Translation-en
Ign http://dk.archive.ubuntu.com natty/restricted Translation-en_US
Ign http://dk.archive.ubuntu.com natty/restricted Translation-en
Ign http://dk.archive.ubuntu.com natty/universe Translation-en_US
Ign http://dk.archive.ubuntu.com natty/universe Translation-en
Ign http://dk.archive.ubuntu.com natty-updates/main Translation-en_US
Ign http://dk.archive.ubuntu.com natty-updates/main Translation-en
Ign http://dk.archive.ubuntu.com natty-updates/multiverse Translation-en_US
Ign http://dk.archive.ubuntu.com natty-updates/multiverse Translation-en
Ign http://dk.archive.ubuntu.com natty-updates/restricted Translation-en_US
Ign http://dk.archive.ubuntu.com natty-updates/restricted Translation-en
Ign http://dk.archive.ubuntu.com natty-updates/universe Translation-en_US
Ign http://dk.archive.ubuntu.com natty-updates/universe Translation-en
Reading package lists... Error!
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/dk.archive.ubuntu.com_ubuntu_dists_natty_main_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.

Slutteligt kan jeg heller ikke få plugin finder service til at fungerer, den siger bare 'No suitable plugins were found'. Hjælp?

[AJenbo]

Mener du den som skal finde codec når du vil se en video der ikke kan afspilles?

[Solo]

Ja. Men også software center og update-manager.

[AJenbo]

Prøv at åbne softwarekilder og skift til hoved serveren. Det kunne også være en hjælp at se din /etc/apt/sources.list