I've seen this announcment on the Social Strata help forum.
We will be performing routine database maintenance and upgrades throughout the next week. During this period there will be no impact on performance or service, however at the start each day there will be a brief outage of 2 to 3 minutes. The maintenance will start at 10:00 AM (Pacific) each day.
I think this means that this forum will be out of action for a short time from today to the 9th at about 7 pm (or at 6pm as the Pacific time zone seems to be different between sites)