deb http://old-releases.ubuntu.com/ubuntu/ maverick main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ maverick-security main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ maverick-updates main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ maverick-proposed main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-security main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-updates main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-proposed main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
如果是其他老版本，那么将列表中的版本号改为对应版本即可：
10.10 的版本名为： maverick
版本号到版本名的查询： http://tieba.baidu.com/p/1562740074
即，如果你的版本号是9.10 ，那么将列表中所有的maverick替换为karmic即可