Some repositories not found while using apt-get update

[durga11]

I am new to ubuntu.I am using ubuntu 9.10. while updating through command line It is unable to fetch some of the repositories. I am facing the same problem as "repository indexes could not be downloaded" while running from update-manager.

durga@durga-laptop:~$ sudo apt-get update
Hit http://ubuntuarchive.hnsdc.com karmic Release.gpg
Ign http://ubuntuarchive.hnsdc.com karmic/universe Translation-en_IN
Ign http://ubuntuarchive.hnsdc.com karmic/multiverse Translation-en_IN
Ign http://ubuntuarchive.hnsdc.com karmic/main Translation-en_IN
Ign http://ubuntuarchive.hnsdc.com karmic/restricted Translation-en_IN
Hit http://ubuntuarchive.hnsdc.com karmic-updates Release.gpg
Get:1 http://packages.medibuntu.org karmic Release.gpg [197B]
Ign http://packages.medibuntu.org karmic/free Translation-en_IN
Ign http://ubuntuarchive.hnsdc.com karmic-updates/universe Translation-en_IN
Hit http://ppa.launchpad.net karmic Release.gpg
Ign http://ppa.launchpad.net karmic/main Translation-en_IN
Ign http://ubuntuarchive.hnsdc.com karmic-updates/multiverse Translation-en_IN
Hit http://ubuntuarchive.hnsdc.com karmic Release
Hit http://ubuntuarchive.hnsdc.com karmic-updates Release
Ign http://packages.medibuntu.org karmic/non-free Translation-en_IN
Get:2 http://packages.medibuntu.org karmic Release [9,237B]
Hit http://ubuntuarchive.hnsdc.com karmic/universe Packages
Hit http://ubuntuarchive.hnsdc.com karmic/universe Sources
Hit http://ubuntuarchive.hnsdc.com karmic/multiverse Sources
Hit http://ubuntuarchive.hnsdc.com karmic/multiverse Packages
Hit http://ubuntuarchive.hnsdc.com karmic/main Packages
Hit http://packages.medibuntu.org karmic/free Packages
Hit http://ubuntuarchive.hnsdc.com karmic/restricted Packages
Hit http://ubuntuarchive.hnsdc.com karmic/main Sources
Hit http://ubuntuarchive.hnsdc.com karmic/restricted Sources
Hit http://ubuntuarchive.hnsdc.com karmic-updates/universe Packages
Get:3 http://ppa.launchpad.net karmic Release.gpg [307B]
Ign http://ppa.launchpad.net karmic/main Translation-en_IN
Hit http://ppa.launchpad.net karmic Release.gpg
Ign http://ppa.launchpad.net karmic/main Translation-en_IN
Hit http://ppa.launchpad.net karmic Release
Hit http://ubuntuarchive.hnsdc.com karmic-updates/universe Sources
Hit http://ubuntuarchive.hnsdc.com karmic-updates/multiverse Sources
Hit http://ubuntuarchive.hnsdc.com karmic-updates/multiverse Packages
Hit http://packages.medibuntu.org karmic/non-free Packages
Get:4 http://ppa.launchpad.net karmic Release [66.0kB]
Ign http://ppa.launchpad.net karmic Release
Hit http://ppa.launchpad.net karmic Release
Hit http://ppa.launchpad.net karmic/main Packages
Hit http://ppa.launchpad.net karmic/main Sources
Hit http://ppa.launchpad.net karmic/main Packages
Hit http://ppa.launchpad.net karmic/main Sources
Hit http://ppa.launchpad.net karmic/main Packages
Hit http://ppa.launchpad.net karmic/main Sources
Ign http://security.ubuntu.com karmic-security Release.gpg
Ign http://security.ubuntu.com karmic-security/universe Translation-en_IN
Ign http://security.ubuntu.com karmic-security/main Translation-en_IN
Ign http://security.ubuntu.com karmic-security/multiverse Translation-en_IN
Ign http://security.ubuntu.com karmic-security/restricted Translation-en_IN
Ign http://security.ubuntu.com karmic-security Release
Ign http://security.ubuntu.com karmic-security/universe Packages
Ign http://security.ubuntu.com karmic-security/main Packages
Ign http://security.ubuntu.com karmic-security/multiverse Packages
Ign http://security.ubuntu.com karmic-security/restricted Packages
Ign http://security.ubuntu.com karmic-security/universe Packages
Ign http://security.ubuntu.com karmic-security/main Packages
Ign http://security.ubuntu.com karmic-security/multiverse Packages
Ign http://security.ubuntu.com karmic-security/restricted Packages
Err http://security.ubuntu.com karmic-security/universe Packages
404 Not Found [IP: 91.189.92.167 80]
Err http://security.ubuntu.com karmic-security/main Packages
404 Not Found [IP: 91.189.92.167 80]
Err http://security.ubuntu.com karmic-security/multiverse Packages
404 Not Found [IP: 91.189.92.167 80]
Err http://security.ubuntu.com karmic-security/restricted Packages
404 Not Found [IP: 91.189.92.167 80]
Fetched 9,742B in 13s (697B/s)
W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 638ABCA0FA3A1271
W: Failed to fetch http://security.ubuntu.com/ubuntu/ubuntu/dists/karmic-security/universe/binary-i386/Packages.gz 404 Not Found [IP: 91.189.92.167 80]

W: Failed to fetch http://security.ubuntu.com/ubuntu/ubuntu/dists/karmic-security/main/binary-i386/Packages.gz 404 Not Found [IP: 91.189.92.167 80]

W: Failed to fetch http://security.ubuntu.com/ubuntu/ubuntu/dists/karmic-security/multiverse/binary-i386/Packages.gz 404 Not Found [IP: 91.189.92.167 80]

W: Failed to fetch http://security.ubuntu.com/ubuntu/ubuntu/dists/karmic-security/restricted/binary-i386/Packages.gz 404 Not Found [IP: 91.189.92.167 80]

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


I am using a wireless internet and didnt configure the network proxy as I can access the internet.

Please find the attached soures.list file and let me know ifany packages needs to be removed.