#0 - March 17, 2010, 4:08 a.m.
Blizzard Post
We’ll be performing maintenance on our authentication services this evening which may impact the ability to log in for some World of Warcraft players. The maintenance will begin at 11:00 PM PDT, March 16 and last until approximately 1:00 AM PDT, March 17.

This will also affect web related services such as forums, account management, Blizzard store, and the armory during the scheduled maintenance time.