Feldon The US Servers will come down on November 22, 2011, at 7:00 am PST for an update. The expected downtime is two hours.
From the EQ2 Forums:
GENERAL
- Assets can no longer be listed for auction on Live Gamer servers.
It seems unlikely that 2 hours of maintenance on every server are needed to push a change to two servers. Perhaps some database maintenance/changes are making made, or some other preparation for the upcoming expansion.