刚装了14.10 更新软件源报错 下载软件仓库信息失败!求助

[huzuhui168]

ubuntu 14.10
手动检查更新时总是提示“下载软件仓库信息失败，检查您的internet连接”，国内163源、自动最佳这些都试过了，我能链接网络正常火狐上网啊？
已经各种百度，还是无力解决，求大神帮忙解决。我装过14.04能正常更新。15.10也能正常更新。
详细信息如下：
W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... ce/Sources 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... ce/Sources 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... ce/Sources 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... ce/Sources 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... 4/Packages 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... 4/Packages 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... 4/Packages 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... 4/Packages 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... 6/Packages 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... 6/Packages 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... 6/Packages 404 Not Found [IP: 123.58.173.185 80]
, W:Failed to fetch http://mirrors.163.com/ubuntu/dists/uto ... 6/Packages 404 Not Found [IP: 123.58.173.185 80]
, E:Some index files failed to download. They have been ignored, or old ones used instead.

[poloshiao]

14.10

Ubuntu 14.10 已經超過 線上安裝/更新 支援期
如果是全新安裝
建議重新安裝
Ubuntu 14.04 LTS
長期支援版本
支援到 2019 年

[vickycq]

14.10(utopic) 已经停止支持和线上更新，软件源已经没有 utopic 目录
https://wiki.ubuntu.com/Releases

短期内不想重装的话可以把源换成 http://old-releases.ubuntu.com/ubuntu/
不过不会再有软件更新，而且服务器在英国，比较慢