我使用代理，因此我已更新/etc/apt/apt.conf我的代理设置，并已删除旧列表sudo rm /var/lib/apt/lists/* -vf。
但是当我运行时仍然会出现以下情况sudo apt-get update：
Ign http://gb.archive.ubuntu.com precise InRelease
Ign http://gb.archive.ubuntu.com precise-updates InRelease
Ign http://gb.archive.ubuntu.com precise-security InRelease
Ign http://gb.archive.ubuntu.com precise-proposed InRelease
Ign http://gb.archive.ubuntu.com precise-backports InRelease
Err http://gb.archive.ubuntu.com precise-security Release.gpg
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-proposed Release.gpg
Bad header line
Err http://gb.archive.ubuntu.com precise Release.gpg
Bad header line
Err http://gb.archive.ubuntu.com precise-updates Release.gpg
Bad header line
Err http://gb.archive.ubuntu.com precise-backports Release.gpg
Got a single header line over 360 chars
Ign http://gb.archive.ubuntu.com precise-security Release
Ign http://gb.archive.ubuntu.com precise-proposed Release
Ign http://gb.archive.ubuntu.com precise Release
Ign http://gb.archive.ubuntu.com precise-updates Release
Ign http://gb.archive.ubuntu.com precise-backports Release
Ign http://gb.archive.ubuntu.com precise-security/main TranslationIndex
Ign http://gb.archive.ubuntu.com precise-security/multiverse TranslationIndex
Ign http://gb.archive.ubuntu.com precise-security/restricted TranslationIndex
Ign http://gb.archive.ubuntu.com precise-security/universe TranslationIndex
Ign http://gb.archive.ubuntu.com precise-proposed/main TranslationIndex
Ign http://gb.archive.ubuntu.com precise-proposed/multiverse TranslationIndex
Ign http://gb.archive.ubuntu.com precise-proposed/restricted TranslationIndex
Ign http://gb.archive.ubuntu.com precise-proposed/universe TranslationIndex
Ign http://gb.archive.ubuntu.com precise/multiverse TranslationIndex
Ign http://gb.archive.ubuntu.com precise/restricted TranslationIndex
Ign http://gb.archive.ubuntu.com precise/universe TranslationIndex
Ign http://gb.archive.ubuntu.com precise/main TranslationIndex
Ign http://gb.archive.ubuntu.com precise-updates/main TranslationIndex
Ign http://gb.archive.ubuntu.com precise-updates/multiverse TranslationIndex
Ign http://gb.archive.ubuntu.com precise-updates/restricted TranslationIndex
Ign http://gb.archive.ubuntu.com precise-updates/universe TranslationIndex
Ign http://gb.archive.ubuntu.com precise-backports/main TranslationIndex
Ign http://gb.archive.ubuntu.com precise-backports/multiverse TranslationIndex
Ign http://gb.archive.ubuntu.com precise-backports/restricted TranslationIndex
Ign http://gb.archive.ubuntu.com precise-backports/universe TranslationIndex
Err http://gb.archive.ubuntu.com precise-security/main Sources
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-security/restricted Sources
Bad header line
Err http://gb.archive.ubuntu.com precise-security/universe Sources
Bad header line
Err http://gb.archive.ubuntu.com precise-security/multiverse Sources
Bad header line
Err http://gb.archive.ubuntu.com precise-security/main amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-security/restricted amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-security/universe amd64 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-security/multiverse amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-security/main i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-security/restricted i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-security/universe i386 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-security/multiverse i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/restricted amd64 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-proposed/main amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/multiverse amd64 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-proposed/universe amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/restricted i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/main i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/multiverse i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/universe i386 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise/main Sources
Bad header line
Err http://gb.archive.ubuntu.com precise/restricted Sources
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise/universe Sources
Bad header line
Err http://gb.archive.ubuntu.com precise/multiverse Sources
Bad header line
Err http://gb.archive.ubuntu.com precise/main amd64 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise/restricted amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise/universe amd64 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise/multiverse amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise/main i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise/restricted i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise/universe i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise/multiverse i386 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-updates/main Sources
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/restricted Sources
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-updates/universe Sources
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/multiverse Sources
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/main amd64 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-updates/restricted amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/universe amd64 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-updates/multiverse amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/main i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/restricted i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/universe i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/multiverse i386 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-backports/restricted amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/main amd64 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-backports/multiverse amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/universe amd64 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/restricted i386 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-backports/main i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/multiverse i386 Packages
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-backports/universe i386 Packages
Bad header line
Err http://gb.archive.ubuntu.com precise-security/main Translation-en_GB
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-security/main Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-security/multiverse Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-security/multiverse Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-security/restricted Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-security/restricted Translation-en
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-security/universe Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-security/universe Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/main Translation-en_GB
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-proposed/main Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/multiverse Translation-en_GB
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-proposed/multiverse Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/restricted Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/restricted Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/universe Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-proposed/universe Translation-en
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise/multiverse Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise/multiverse Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise/restricted Translation-en_GB
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise/restricted Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise/universe Translation-en_GB
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise/universe Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise/main Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise/main Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/main Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/main Translation-en
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-updates/multiverse Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/multiverse Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/restricted Translation-en_GB
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-updates/restricted Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-updates/universe Translation-en_GB
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-updates/universe Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/main Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/main Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/multiverse Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/multiverse Translation-en
Got a single header line over 360 chars
Err http://gb.archive.ubuntu.com precise-backports/restricted Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/restricted Translation-en
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/universe Translation-en_GB
Bad header line
Err http://gb.archive.ubuntu.com precise-backports/universe Translation-en
Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/Release.gpg Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/Release.gpg Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/Release.gpg Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/Release.gpg Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/Release.gpg Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/main/source/Sources Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/restricted/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/universe/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/multiverse/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/main/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/restricted/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/universe/binary-amd64/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/multiverse/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/main/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/restricted/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/universe/binary-i386/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/multiverse/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/restricted/binary-amd64/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/main/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/multiverse/binary-amd64/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/universe/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/restricted/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/main/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/multiverse/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/universe/binary-i386/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/main/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/restricted/source/Sources Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/universe/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/multiverse/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/main/binary-amd64/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/restricted/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/universe/binary-amd64/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/multiverse/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/main/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/restricted/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/universe/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/multiverse/binary-i386/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/main/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/source/Sources Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/source/Sources Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/main/binary-amd64/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/binary-amd64/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/main/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/binary-i386/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/main/binary-amd64/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/binary-amd64/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/binary-i386/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/main/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/binary-i386/Packages Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/binary-i386/Packages Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/main/i18n/Translation-en_GB Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/main/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/multiverse/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/multiverse/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/restricted/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/restricted/i18n/Translation-en Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/universe/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-security/universe/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/main/i18n/Translation-en_GB Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/main/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/multiverse/i18n/Translation-en_GB Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/multiverse/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/restricted/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/restricted/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/universe/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-proposed/universe/i18n/Translation-en Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/multiverse/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/multiverse/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/restricted/i18n/Translation-en_GB Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/restricted/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/universe/i18n/Translation-en_GB Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/universe/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/main/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise/main/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/main/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/main/i18n/Translation-en Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/multiverse/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/i18n/Translation-en_GB Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/restricted/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/i18n/Translation-en_GB Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-updates/universe/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/main/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/main/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/i18n/Translation-en Got a single header line over 360 chars
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/i18n/Translation-en Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en Bad header line
我使用的是 Ubuntu 12.04。这是办公室中的以太网连接，它连接到 Sophos 代理。
答案1
几分钟前，我使用其中一个ppas ( ) 遇到了此问题，并执行以下操作解决了该问题：Geogebra
sudo rm -rf /var/lib/apt/lists/* && sudo apt-get update
答案2
您必须正确设置 apt-get 才能在代理后面使用它：
https://help.ubuntu.com/community/AptGet/Howto#Setting_up_apt-get_to_use_a_http-proxy
答案3
看起来它坏了。我喜欢用http://www.isup.me/验证站点是否瘫痪。
答案4
除了将服务器更改为 old-releases.ubuntu.com 而不是 cc.archives.ubuntu.com 之外，您还需要将协议从简单的 http 更改为加密的 https。对我有用！
顺便说一句，您可以使用“sed”自动完成这两项替换。