Software not installing in 12.04

When I try to install any software from the software centre,I get the error"Requires installation of untrusted packages".There is a repair option,clicking it results in "updating cache".But the updating never occurs and terminates with the error "check your internet connection"

this is the output of get update:

 Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main i386 Packages
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main Translation-en_IN
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main Translation-en
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main Sources
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main amd64 Packages
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main i386 Packages
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main Translation-en_IN
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main Translation-en
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main Sources
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main amd64 Packages
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main i386 Packages
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main Translation-en_IN
  Got a single header line over 360 chars
Err http://ppa.launchpad.net precise/main Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/main Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/restricted Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/universe Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/multiverse Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/main amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/restricted amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/universe amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/multiverse amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/main i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/restricted i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/universe i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/multiverse i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/main Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/main Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/multiverse Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/multiverse Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/restricted Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/restricted Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/universe Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise/universe Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/main Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/restricted Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/universe Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/multiverse Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/main amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/restricted amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/universe amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/multiverse amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/main i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/restricted i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/universe i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/multiverse i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/main Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/main Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/multiverse Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/multiverse Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/restricted Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/restricted Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/universe Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-updates/universe Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/main Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/restricted Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/universe Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/multiverse Sources
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/main amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/restricted amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/universe amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/multiverse amd64 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/main i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/restricted i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/universe i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/multiverse i386 Packages
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/main Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/main Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/multiverse Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/multiverse Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/restricted Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/restricted Translation-en
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/universe Translation-en_IN
  Got a single header line over 360 chars
Err http://in.archive.ubuntu.com precise-backports/universe Translation-en
  Got a single header line over 360 chars
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/cooperjona/lightread/ubuntu/dists/precise/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/jd-team/jdownloader/ubuntu/dists/precise/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/paullo612/unityshell-rotated/ubuntu/dists/precise/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/plushuang-tw/uget-stable/ubuntu/dists/precise/Release.gpg Got a single header line over 360 chars

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/restricted/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/universe/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/multiverse/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/restricted/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/universe/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/multiverse/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/restricted/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/restricted/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/universe/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/universe/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/multiverse/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/multiverse/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/cooperjona/lightread/ubuntu/dists/precise/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/restricted/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/cooperjona/lightread/ubuntu/dists/precise/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/multiverse/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/multiverse/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/universe/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/cooperjona/lightread/ubuntu/dists/precise/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/restricted/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/restricted/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/multiverse/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/cooperjona/lightread/ubuntu/dists/precise/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/cooperjona/lightread/ubuntu/dists/precise/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/jd-team/jdownloader/ubuntu/dists/precise/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/universe/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/universe/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/restricted/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/jd-team/jdownloader/ubuntu/dists/precise/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/universe/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/jd-team/jdownloader/ubuntu/dists/precise/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/multiverse/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/jd-team/jdownloader/ubuntu/dists/precise/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/jd-team/jdownloader/ubuntu/dists/precise/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/paullo612/unityshell-rotated/ubuntu/dists/precise/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/paullo612/unityshell-rotated/ubuntu/dists/precise/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/multiverse/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/multiverse/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/paullo612/unityshell-rotated/ubuntu/dists/precise/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/paullo612/unityshell-rotated/ubuntu/dists/precise/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/paullo612/unityshell-rotated/ubuntu/dists/precise/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/restricted/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/restricted/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/plushuang-tw/uget-stable/ubuntu/dists/precise/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/universe/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise/universe/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/plushuang-tw/uget-stable/ubuntu/dists/precise/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/plushuang-tw/uget-stable/ubuntu/dists/precise/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/plushuang-tw/uget-stable/ubuntu/dists/precise/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://ppa.launchpad.net/plushuang-tw/uget-stable/ubuntu/dists/precise/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/main/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/source/Sources Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/main/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/binary-amd64/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/main/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/binary-i386/Packages Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/main/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/main/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/i18n/Translation-en Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en_IN Got a single header line over 360 chars

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en Got a single header line over 360 chars

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

Please help...