On Wednesday June 12, the Cornell server will be down from 7AM to 8AM EDT (which I think converts to 11AM to 12Noon GMT, and beyond that, I leave conversion as an exercise for someone else) for maintenence.
Messages sent during that time will be delayed. So if you post during
that period and don't see your message within the usual timeframe, don't
panic.
It's possible that the downtime may be a little longer than scheduled.
So please be patient.
Julia
