我运行的是 Ubuntu Server 12.04.3 LTS。今天，我想更新它，但我没有成功（是的……），不过升级过程很顺利。我并不想让你解决我的问题，但如果你能给我一些提示，我将不胜感激。我在 Google 上搜索了几个小时，发现了很多这种错误，但并不完全是这个。
以下是输出apt-get update：
Hit http://filepile.fastit.net precise Release.gpg
Hit http://filepile.fastit.net precise Release
Hit http://filepile.fastit.net precise/main amd64 Packages
Hit http://filepile.fastit.net precise/restricted amd64 Packages
Hit http://filepile.fastit.net precise/universe amd64 Packages
Hit http://filepile.fastit.net precise/multiverse amd64 Packages
Hit http://filepile.fastit.net precise/main i386 Packages
Hit http://filepile.fastit.net precise/restricted i386 Packages
Hit http://filepile.fastit.net precise/universe i386 Packages
Hit http://filepile.fastit.net precise/multiverse i386 Packages
Ign http://filepile.fastit.net precise/main TranslationIndex
Ign http://filepile.fastit.net precise/multiverse TranslationIndex
Ign http://filepile.fastit.net precise/restricted TranslationIndex
Ign http://filepile.fastit.net precise/universe TranslationIndex
Ign http://filepile.fastit.net precise/main Translation-en_GB
Ign http://filepile.fastit.net precise/main Translation-en
Ign http://filepile.fastit.net precise/main Translation-en_GB.UTF-8
Hit http://archive.canonical.com precise Release.gpg
Ign http://filepile.fastit.net precise/multiverse Translation-en_GB
Ign http://filepile.fastit.net precise/multiverse Translation-en
Ign http://filepile.fastit.net precise/multiverse Translation-en_GB.UTF-8
Ign http://filepile.fastit.net precise/restricted Translation-en_GB
Ign http://filepile.fastit.net precise/restricted Translation-en
Ign http://filepile.fastit.net precise/restricted Translation-en_GB.UTF-8
Ign http://filepile.fastit.net precise/universe Translation-en_GB
Ign http://filepile.fastit.net precise/universe Translation-en
Ign http://filepile.fastit.net precise/universe Translation-en_GB.UTF-8
Hit http://archive.ubuntu.com precise Release.gpg
Hit http://archive.canonical.com precise Release
Hit http://archive.ubuntu.com precise Release
Hit http://archive.ubuntu.com precise/main Sources
Hit http://archive.ubuntu.com precise/restricted Sources
Hit http://archive.ubuntu.com precise/main i386 Packages
Hit http://archive.ubuntu.com precise/restricted i386 Packages
Hit http://archive.ubuntu.com precise/multiverse i386 Packages
Hit http://archive.ubuntu.com precise/main TranslationIndex
Hit http://archive.ubuntu.com precise/multiverse TranslationIndex
Hit http://archive.ubuntu.com precise/restricted TranslationIndex
Hit http://archive.ubuntu.com precise/main Translation-en_GB
Hit http://archive.ubuntu.com precise/main Translation-en
Hit http://archive.ubuntu.com precise/multiverse Translation-en_GB
Hit http://archive.ubuntu.com precise/multiverse Translation-en
Hit http://archive.ubuntu.com precise/restricted Translation-en_GB
Hit http://archive.ubuntu.com precise/restricted Translation-en
Hit http://fr.archive.ubuntu.com precise-security Release.gpg
Hit http://fr.archive.ubuntu.com precise-updates Release.gpg
Hit http://fr.archive.ubuntu.com precise-security Release
Hit http://fr.archive.ubuntu.com precise-updates Release
Hit http://fr.archive.ubuntu.com precise-security/main amd64 Packages
Hit http://fr.archive.ubuntu.com precise-security/restricted amd64 Packages
Hit http://fr.archive.ubuntu.com precise-security/universe amd64 Packages
Hit http://fr.archive.ubuntu.com precise-security/multiverse amd64 Packages
:W: Failed to fetch http://archive.canonical.com/dists/precise/Release Unable to find expected entry 'main/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)
E: Some index files failed to download. They have been ignored, or old ones used instead.
Hit http://fr.archive.ubuntu.com precise-security/main i386 Packages
Hit http://fr.archive.ubuntu.com precise-security/restricted i386 Packages
Hit http://fr.archive.ubuntu.com precise-security/universe i386 Packages
Hit http://fr.archive.ubuntu.com precise-security/multiverse i386 Packages
Hit http://fr.archive.ubuntu.com precise-security/main TranslationIndex
Hit http://fr.archive.ubuntu.com precise-security/multiverse TranslationIndex
Hit http://fr.archive.ubuntu.com precise-security/restricted TranslationIndex
Hit http://fr.archive.ubuntu.com precise-security/universe TranslationIndex
Hit http://fr.archive.ubuntu.com precise-updates/main amd64 Packages
Hit http://fr.archive.ubuntu.com precise-updates/restricted amd64 Packages
Hit http://fr.archive.ubuntu.com precise-updates/universe amd64 Packages
Hit http://fr.archive.ubuntu.com precise-updates/multiverse amd64 Packages
Hit http://fr.archive.ubuntu.com precise-updates/main i386 Packages
Hit http://fr.archive.ubuntu.com precise-updates/restricted i386 Packages
Hit http://fr.archive.ubuntu.com precise-updates/universe i386 Packages
Hit http://fr.archive.ubuntu.com precise-updates/multiverse i386 Packages
Hit http://fr.archive.ubuntu.com precise-updates/main TranslationIndex
Hit http://fr.archive.ubuntu.com precise-updates/multiverse TranslationIndex
Hit http://fr.archive.ubuntu.com precise-updates/restricted TranslationIndex
Hit http://fr.archive.ubuntu.com precise-updates/universe TranslationIndex
Hit http://fr.archive.ubuntu.com precise-security/main Translation-en
Hit http://fr.archive.ubuntu.com precise-security/multiverse Translation-en
Hit http://fr.archive.ubuntu.com precise-security/restricted Translation-en
Hit http://fr.archive.ubuntu.com precise-security/universe Translation-en
Hit http://fr.archive.ubuntu.com precise-updates/main Translation-en_GB
Hit http://fr.archive.ubuntu.com precise-updates/main Translation-en
Hit http://fr.archive.ubuntu.com precise-updates/multiverse Translation-en_GB
Hit http://fr.archive.ubuntu.com precise-updates/multiverse Translation-en
Hit http://fr.archive.ubuntu.com precise-updates/restricted Translation-en_GB
Hit http://fr.archive.ubuntu.com precise-updates/restricted Translation-en
Hit http://fr.archive.ubuntu.com precise-updates/universe Translation-en_GB
Hit http://fr.archive.ubuntu.com precise-updates/universe Translation-en
这是我的/etc/apt/sources.list：
###### Ubuntu Main Repos
deb http://filepile.fastit.net/ubuntu/ precise main restricted universe multiverse
# deb http://de.archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse
deb http://archive.canonical.com/ precise main restricted universe multiverse
###### Ubuntu Update Repos
deb http://fr.archive.ubuntu.com/ubuntu/ precise-security main restricted universe multiverse
deb http://fr.archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ precise main restricted multiverse
deb-src http://archive.ubuntu.com/ubuntu precise main restricted multiverse
感谢您的帮助！
答案1
该archive.canonical.com存储库，没有main，也没有restricted，也没有universe，也没有multiverse。是仅限合作伙伴的存储库：
您应该修改此行：
deb http://archive.canonical.com/ precise main restricted universe multiverse
因此它读起来像这样：
deb http://archive.canonical.com/ precise partner