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在7.04下利用更新服务器想升级到7.10，升级过程中出现如下问题：

无法下载全部软件库索引

软件库也许不再可用或者因网络原因而无法联络。如果可用，这个已失败的索引的老版本将被使用。否则该软件库将被忽略。请检查您的网络连接并且在首选项里修正该软件库地址的写法。

http://ubuntu.sh.cvut.cz/dists/feisty/m ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty/r ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty/m ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty/r ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty/u ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty/u ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty/m ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty/m ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-u ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-u ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-u ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-u ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-s ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-s ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-s ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-s ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-s ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-s ... Sources.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-s ... ackages.gz: 404 Not Found
http://ubuntu.sh.cvut.cz/dists/feisty-s ... Sources.gz: 404 Not Found

请教各位高手是什么原因，如何解决？

谢谢！

还是改源以后再做吧

我的也是

忽略 http://ftp.sjtu.edu.cn gutsy Release.gpg
忽略 http://ftp.sjtu.edu.cn gutsy/main Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy/multiverse Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy/restricted Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy/universe Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy/main Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy/multiverse Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy/restricted Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy/universe Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-backports Release.gpg
忽略 http://ftp.sjtu.edu.cn gutsy-backports/main Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-backports/multiverse Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-backports/restricted Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-backports/universe Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-proposed Release.gpg
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/main Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/multiverse Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/restricted Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/universe Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-security Release.gpg
忽略 http://ftp.sjtu.edu.cn gutsy-security/main Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-security/multiverse Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-security/restricted Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-security/universe Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-updates Release.gpg
忽略 http://ftp.sjtu.edu.cn gutsy-updates/main Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-updates/multiverse Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-updates/restricted Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-updates/universe Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy Release
忽略 http://ftp.sjtu.edu.cn gutsy-backports Release
忽略 http://ftp.sjtu.edu.cn gutsy-proposed Release
忽略 http://ftp.sjtu.edu.cn gutsy-security Release
忽略 http://ftp.sjtu.edu.cn gutsy-updates Release
忽略 http://ftp.sjtu.edu.cn gutsy/main Packages
忽略 http://ftp.sjtu.edu.cn gutsy/multiverse Packages
忽略 http://ftp.sjtu.edu.cn gutsy/restricted Packages
忽略 http://ftp.sjtu.edu.cn gutsy/universe Packages
忽略 http://ftp.sjtu.edu.cn gutsy/main Packages
忽略 http://ftp.sjtu.edu.cn gutsy/multiverse Packages
忽略 http://ftp.sjtu.edu.cn gutsy/restricted Packages
忽略 http://ftp.sjtu.edu.cn gutsy/universe Packages
忽略 http://ftp.sjtu.edu.cn gutsy/main Sources
忽略 http://ftp.sjtu.edu.cn gutsy/multiverse Sources
忽略 http://ftp.sjtu.edu.cn gutsy/restricted Sources
忽略 http://ftp.sjtu.edu.cn gutsy/universe Sources
忽略 http://ftp.sjtu.edu.cn gutsy-backports/main Packages
忽略 http://ftp.sjtu.edu.cn gutsy-backports/multiverse Packages
忽略 http://ftp.sjtu.edu.cn gutsy-backports/restricted Packages
忽略 http://ftp.sjtu.edu.cn gutsy-backports/universe Packages
忽略 http://ftp.sjtu.edu.cn gutsy-backports/main Sources
忽略 http://ftp.sjtu.edu.cn gutsy-backports/multiverse Sources
忽略 http://ftp.sjtu.edu.cn gutsy-backports/restricted Sources
忽略 http://ftp.sjtu.edu.cn gutsy-backports/universe Sources
获取：1 http://cn.archive.ubuntu.com feisty-backports Release.gpg [191B]
忽略 http://cn.archive.ubuntu.com feisty-backports/main/debian-installer Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/main Packages
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/multiverse Packages
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/restricted Packages
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/universe Packages
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/main Sources
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/multiverse Sources
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/restricted Sources
忽略 http://cn.archive.ubuntu.com feisty-backports/universe Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-proposed/universe Sources
忽略 http://ftp.sjtu.edu.cn gutsy-security/main Packages
忽略 http://ftp.sjtu.edu.cn gutsy-security/multiverse Packages
忽略 http://cn.archive.ubuntu.com feisty-backports/restricted Translation-zh_CN
忽略 http://cn.archive.ubuntu.com feisty-backports/multiverse Translation-zh_CN
忽略 http://ftp.sjtu.edu.cn gutsy-security/restricted Packages
忽略 http://ftp.sjtu.edu.cn gutsy-security/universe Packages
忽略 http://ftp.sjtu.edu.cn gutsy-security/main Sources
忽略 http://ftp.sjtu.edu.cn gutsy-security/multiverse Sources
忽略 http://ftp.sjtu.edu.cn gutsy-security/restricted Sources
忽略 http://ftp.sjtu.edu.cn gutsy-security/universe Sources
忽略 http://ftp.sjtu.edu.cn gutsy-updates/main Packages
命中 http://cn.archive.ubuntu.com feisty-backports Release
忽略 http://ftp.sjtu.edu.cn gutsy-updates/multiverse Packages
忽略 http://ftp.sjtu.edu.cn gutsy-updates/restricted Packages
忽略 http://ftp.sjtu.edu.cn gutsy-updates/universe Packages
忽略 http://ftp.sjtu.edu.cn gutsy-updates/main Sources
忽略 http://ftp.sjtu.edu.cn gutsy-updates/multiverse Sources
忽略 http://ftp.sjtu.edu.cn gutsy-updates/restricted Sources
忽略 http://ftp.sjtu.edu.cn gutsy-updates/universe Sources
错误 http://ftp.sjtu.edu.cn gutsy/main Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/multiverse Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/restricted Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/universe Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/main Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/multiverse Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/restricted Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/universe Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/main Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/multiverse Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/restricted Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy/universe Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-backports/main Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-backports/multiverse Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-backports/restricted Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-backports/universe Packages
404 Not Found
命中 http://cn.archive.ubuntu.com feisty-backports/main/debian-installer Packages
错误 http://ftp.sjtu.edu.cn gutsy-backports/main Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-backports/multiverse Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-backports/restricted Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-backports/universe Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-proposed/main Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-proposed/multiverse Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-proposed/restricted Packages
404 Not Found
命中 http://cn.archive.ubuntu.com feisty-backports/universe Packages
错误 http://ftp.sjtu.edu.cn gutsy-proposed/universe Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-proposed/main Sources
404 Not Found
命中 http://cn.archive.ubuntu.com feisty-backports/restricted Packages
命中 http://cn.archive.ubuntu.com feisty-backports/multiverse Packages
错误 http://ftp.sjtu.edu.cn gutsy-proposed/multiverse Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-proposed/restricted Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-proposed/universe Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-security/main Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-security/multiverse Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-security/restricted Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-security/universe Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-security/main Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-security/multiverse Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-security/restricted Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-security/universe Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-updates/main Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-updates/multiverse Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-updates/restricted Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-updates/universe Packages
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-updates/main Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-updates/multiverse Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-updates/restricted Sources
404 Not Found
错误 http://ftp.sjtu.edu.cn gutsy-updates/universe Sources
404 Not Found
下载 1B，耗时 1s (1B/s)
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://cn.archive.ubuntu.com/ubuntu/dis ... ts/Release Unable to find expected entry main/debian-installer/source/Sources in Meta-index file (malformed Release file?)
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... ackages.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
无法下载 http://ftp.sjtu.edu.cn/ubu.../dists/gut ... Sources.gz 404 Not Found
正在读取软件包列表... 完成
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。

改成下面一组源，把所有非官方的源删去就可以了！！
deb http://tw.archive.ubuntu.com/ubuntu gutsy main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse

问题已经解决，
我先用7.04的源升级，再把/etc/apt/sources.list里的feisty替换成gutsy保存。
升级成功，