UU is used to accelerate pings in video games here in china because some servers are unreachable. i took part of your advice and i found where the problem was. after i opened uu and had it connect to a server then disconnected then my ESET did an update and i had to restart my computer. after a restart i noticed it started to download the module that was 5MB but it got to 3MB and then froze like it lost signal to the server. so i went into connect and set it to global proxy and jumped on my global proxy here in china . and i tried the update again and it worked fine and downloaded. so it seems to be that whatever server you guys are using for china it is having an issue reaching it behind the great firewall of china.