Like Xod said, once per week in WoW is normal. In fact, every major MMO I have played as long as I can remember limits maintenances to once per week with the occasional emergency outage. Emergency outages are way, way, way too frequent. It's cutting into my play time, too, and I am not going to keep paying $15 a month for a game I can only play half of the days I want to. I've had 5 chances to play this week, and maintenance days have fallen on 3 of them.