Guild Wars will be down for scheduled security maintenance on Tuesday 10/28/2008 from 12:00 am PST (7:00 am GMT) to 3:00 am PST (10:00 am GMT). During the maintenance period, the game servers will be taken offline and players will be unable to login to the game and play at this time.
Microsoft recently released a critical security patch that we feel is pretty important, so we'll be taking down the game for a few hours to apply it. We tried to schedule this security maintenance at a time when as few players are impacted as possible. We've tried to minimize the amount of time we need to take the game servers offline, and we've been largely successful thus far.
You may have noticed that Guild Wars does not have regularly scheduled maintenance periods. The game servers have been running 24x7 for over a year with no interruptions, planned or otherwise. However, Guild Wars is a global game and there's never an idle period because there are always players from some part of the world enjoying the game. This means that there's really no good time to schedule maintenance of this kind.
We apologize for the inconvenience, and hope that you'll find something fun to do during the patch; the game will be back up as quickly as we can get everything ready.