ubuntu apt-get 升级更新“有一些索引文件不能下载..“的解决

#sudo apt-get uodate

http://mirror.switch.ch jaunty-updates/restricted Packages
命中 http://mirror.switch.ch jaunty-updates/universe Packages
W: 无法下载 http://archive.ubuntu.com/ubuntu/dists/jaunty-proposed/Release  Unable to find expected entry  multivers/source/Sources in Meta-index file (malformed Release file?)
E: 有一些索引文件不能下载，它们可能被忽略了，也可能转而使用了旧的索引文件。

解决办法1：
执行下面的命令
sudo rm /var/lib/apt/lists/partial/*
然后再 apt-get update 就没问题了。

解决办法2：
也可能是更新源出错了，重新更新一下
sudo vim /etc/apt/sources.list

更新源参考如下

#网易163更新服务器：
deb http://mirrors.163.com/ubuntu/ jaunty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-backports main restricted universe multiverse
#以下源支持IPV6,推荐可以使用IPV6的教育网用户使用，速度在200kb/s左右，如需源代码，将deb替换成deb-src即可
deb http://mirror.switch.ch/ftp/ubuntu/ jaunty main multiverse restricted universe
deb http://mirror.switch.ch/ftp/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://mirror.switch.ch/ftp/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://mirror.switch.ch/ftp/ubuntu/ jaunty-security main multiverse restricted universe
deb http://mirror.switch.ch/ftp/ubuntu/ jaunty-updates main multiverse restricted universe
deb http://ftp.heanet.ie/mirrors/ubuntu/ jaunty main multiverse restricted universe
deb http://ftp.heanet.ie/mirrors/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ftp.heanet.ie/mirrors/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ftp.heanet.ie/mirrors/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ftp.heanet.ie/mirrors/ubuntu/ jaunty-updates main multiverse restricted universe
deb http://ftp.kddlabs.co.jp/020/Linux/packages/ubuntu/archive/ jaunty main multiverse restricted universe
deb http://ftp.kddlabs.co.jp/020/Linux/packages/ubuntu/archive/ jaunty-backports main multiverse restricted universe
deb http://ftp.kddlabs.co.jp/020/Linux/packages/ubuntu/archive/ jaunty-proposed main multiverse restricted universe
deb http://ftp.kddlabs.co.jp/020/Linux/packages/ubuntu/archive/ jaunty-security main multiverse restricted universe
deb http://ftp.kddlabs.co.jp/020/Linux/packages/ubuntu/archive/ jaunty-updates main multiverse restricted universe