I was hanging out in the Arch room and the loudspeaker went off. WTF?
Your mud receives all sorts of network requests from the intermud network, such are remote who (asking who is logged on), remote finger (info on users), locate (trying to find a user somewhere on i3), etc. Whenever your mud receives such a request, it used to be announced in the Arch room. If that is still happening, you are probably not running a current version of the lib. The current behavior is that network messages are announced in the network room (below the arch room) and router messages are announced in the router room (south of the network room). Note that these messages are normal.