AOSC OS Repository Mirror at USTC is Down
December 3, 2016
Our mirror at USTC is down, due to recurring hard disk array failures.
That said, you might need to change your APT source lists to install and update packages normally. Use apt-gen-list -l to see your options (avoid 10-ustc for now), and apt-gen-list -e "repo1 repo2 repo3" to enable new mirrors to use.
We will post another notice when USTC's mirror has resolved this issue.
Relevant documentation: