小編在安裝更新Linux時遇到了some index files failed to download ，這個問題是因為找不到下載來源的問題，解決的方式就是將Source List的來源更換，以下提供解決方式如下：
1.首先將source list備份
sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup
2.開啟source (這邊採用gedit 也可使用vi 開啟)
sudo gedit /etc/apt/sources.list
3.更新 source list 貼到文件上
deb http://mirror.lupaworld.com/ubuntu maverick main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu maverick-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu maverick-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu maverick-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu maverick-proposed main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu maverick main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu maverick-security main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu maverick-updates main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu maverick-backports main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu maverick-proposed main restricted universe multiverse
4.儲存檔案並且更新
sudo apt-get update
附錄：以下提供 source list 列表 Ubuntu 10.10版本
#maverick(10.10)
#Archive.ubuntu.com
deb http://archive.ubuntu.com/ubuntu/ maverick main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ maverick-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ maverick-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ maverick-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ maverick main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ maverick-security main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ maverick-updates main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ maverick-proposed main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ maverick-backports main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ maverick main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ maverick-security main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ maverick-updates main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ maverick-proposed main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ maverick-backports main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ maverick main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ maverick-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ maverick-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ maverick-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ maverick-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ maverick main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ maverick-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ maverick-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ maverick-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ maverick-backports main restricted universe multiverse