We started getting a few tips about realms going down about half an hour ago, and Blizzard's now confirmed that 3 dozen realms are down to address "some instancing issues." Interestingly, the brand-new realm Borean Tundra is among them, and I recognized a few others that are relatively new, as well as the usual forum whipping-boy Misha.

2 hours is the estimated downtime, so if you're on one of the affected realms, I'd start checking back around 2:45-3:00 pm EST. We'll keep you up to date if maintenance is extended. Read on for the list:

UPDATE 2:03 pm EST: Anub'arak is now listed as the only realm affected.

UPDATE 2:32 pm EST: Looks like all the affected realms are back up early.

Antonidas
Anub'arak
Blackwater Raiders
Bladefist
Borean Tundra
Cairne
Cenarion Circle
Cenarius
Darrowmere
Drak'Tharon
Drenden
Echo Isles
Farstriders
Fenris
Garrosh
Hydraxis
Hyjal
Korialstrasz
Maiev
Misha
Mok'Nathal
Moon Guard
Nazgrel
Nordrassil
Quel'dorei
Ravenholdt
Rivendare
Shandris
Shu'halo
Sisters of Elune
The Forgotten Coast
Tortheldrin
Uther
Vashj
Winterhoof
Wyrmrest Accord

This article was originally published on WoW Insider.

WoW Insider Show live this afternoon