All wikis will be locked for a while tonight to make an up to date clone of the database so we can get it set up on the new server.
8 February 05:00 UTC == 9pm PST, midnight EST, 5am GMT, 6am CET Please announce this wherever it seems appropriate!
I'm sorry, I don't know exactly how long this will take, but perhaps roughly a couple of hours. Maybe less, maybe not. We'll actually switch over to running the site on the new servers later this weekend if nothing goes wrong; updates on the old server until then will be replicated so there shouldn't be any data loss.
(Tech note: we'll just copy the files on the local hard disk since there's room, then ship the copies across the continent at our leisure once the main db's running again. This should minimize the downtime, but they're still really big files.)
-- brion vibber (brion @ pobox.com)