安装shadowsocks的问题

[guyeuro]

我想安装shadowsocks 我的ubuntu是14.04LTS
我运行下面命令
然后得到
sudo add-apt-repository ppa:hzwhuang/ss-qt5
sudo apt-get update

代码： 全选

W: Failed to fetch http://ppa.launchpad.net/hzwhuang/ss-qt5/ubuntu/dists/trusty/main/binary-amd64/Packages  Hash Sum mismatch

W: Failed to fetch http://ppa.launchpad.net/hzwhuang/ss-qt5/ubuntu/dists/trusty/main/binary-i386/Packages  Hash Sum mismatch

W: Failed to fetch http://ppa.launchpad.net/hzwhuang/ss-qt5/ubuntu/dists/trusty/main/i18n/Translation-en  Hash Sum mismatch

W: Failed to fetch http://ppa.launchpad.net/fcitx-team/nightly/ubuntu/dists/trusty/main/binary-amd64/Packages  Hash Sum mismatch

W: Failed to fetch http://ppa.launchpad.net/fcitx-team/nightly/ubuntu/dists/trusty/main/binary-i386/Packages  Hash Sum mismatch

W: Failed to fetch http://ppa.launchpad.net/fcitx-team/nightly/ubuntu/dists/trusty/main/i18n/Translation-en  Hash Sum mismatch

E: Some index files failed to download. They have been ignored, or old ones used instead.

怎办？

[vickycq]

W: Failed to fetch http://ppa.launchpad.net/hzwhuang/ss-qt ... 4/Packages Hash Sum mismatch

一般是运营商缓存问题

我用手机4G网开热点，电脑连接，再安装软件，果然没有出现这中问题，我的宽带真垃圾

参考
http://forum.ubuntu.com.cn/viewtopic.php?f=77&t=465499
viewtopic.php?f=52&t=423516

实际测试了一下，今天又出现了 Hash Sum Mismatch，多次尝试仍无法避免。将USTC源换为 https，apt-get update && apt-get dist-upgrade，成功更新。说明有一定效果。

http://forum.ubuntu.com.cn/viewtopic.php?f=77&t=465499
更新源时总是出现Hash校验和不符（Hash Sum Mismatch）的原因以及解决方案