update-manager stops upgrading my kubuntu from hardy to intrepid with such messages

[AltzGamer]

Binary package hint: update-manager

W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid/restricted/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid/universe/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-updates/Release.gpg Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-updates/main/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-updates/restricted/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-updates/universe/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-updates/multiverse/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-backports/main/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-backports/restricted/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-backports/universe/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-backports/multiverse/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-proposed/Release.gpg Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-proposed/main/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-proposed/multiverse/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, W:Failed to fetch http://ru.archive.ubuntu.com/ubuntu/dists/intrepid-proposed/universe/i18n/Translation-en_US.bz2 Bad header line [IP: 77.88.19.73 80]
, E:Some index files failed to download, they have been ignored, or old ones used instead.

[Thermaltaker (dennis-benndorf)]

Have you tried to change the location of your repositry-servers? Please try to change it to "main" in software-sources.
It seems that the russian servers have some problems here.

[AltzGamer (inklu)]

It helps. Thanks a lot!

[Jean-Baptiste Lallement (jibel)]

Thanks for following up. I'm closing this report due to your last comment. Feel free to reopen if it's still an issue. Don't hesitate to submit any new bug.