+Admin Microsoft notified players just a moment ago that the servers will be coming down for a hot fix.
They appologize for any ‘inconvinience’ this may cause.
Update: It seems Frostfell, Solclaim and Thistledown are now down. No word on when they’ll be back up yet.
Another Update: srand posted this over on the Vault:
We’re having a small hardware issue with Frostfell and Leafcull. The Ops guys are working on it and hope to have it resolved soon.
Edit: Working on it may require taking some of the other worlds down temporarily as well.