if you look on uo.com, there's a post that jeremy put up yesterday (the 23rd) that says "Tomorrow, Sept 23rd, at noon EST, we'll be doing some hardware maintenance. The login servers and some subsystems (housing, vet rewards, etc) will be unavailable for approximately 45 minutes. Thanks!"
i'm guessing she meant "Tomorrow, Sept 24th" which would make sense with the down time you noticed... who knows.