最近各个镜像出问题的官方解释

violinwise

Package Deletion Issues

Hello all,
Due to an error in our backend scripts along with the new version of
pacman, a large number of packages were removed on our central server,
causing all mirrors to delete these packages when syncing. This happened
on Sunday August 16th. When we finally caught it (6 hours later), we
restored the packages, but a lot of mirrors had already synced. Currently,
due to bandwidth limitations, all mirrors will take some time to sync back up.

This affects all repos except community, though it appears core and testing
are mostly re-synced on a majority of mirrors. Only extra remains an issue.

We apologize for the inconvenience. Steps have been taken to ensure
this doesn't happen again.

简而言之，就是中央服务器不小心删除了很多包，导致镜像服务器也跟着删除。虽然中央服务器很快就恢复了这些包，但是同步到镜像服务器要很多时间。除了 community 都受到影响。

osfree

最近速度都很慢，不知跟这个有没原因。

cwjiof

显然是这个原因导致的。等电脑进化成了光脑，硬盘存储进化成光存储，网络带宽进化成 1000G，应该就没有这个问题了。

violinwise

Post by osfree;2018320
最近速度都很慢，不知跟这个有没原因。

有可能哦，再加上台湾地震。

liwangli

Post by violinwise;2018405
有可能哦，再加上台湾地震。

可能是这个原因吧,我说用官方源怎么那么慢

gonline

自从笔记本被偷了之后就再也没有接触Linux了，各种悲剧啊。。

doze_worm

Post by liwangli;2018459
可能是这个原因吧,我说用官方源怎么那么慢

主要是这个原因。台湾地震、台风，马英九为救灾不力而在国会上鞠躬致歉。前几天$MN登陆不上，大陆的电信还发表声明，说全力调节网络，争取恢复通信，记得新浪的新闻里还转载了。