Looks like something is amiss with that $1 billion North Carolina data center as Apple just acknowledged that a limited number of iCloud users are having issues accessing their iCloud email. A bunch of people reported the problem earlier today on Apple's discussion forums.
The Cupertino, California company is working to resolve the problem "ASAP", reads a notice on Apple's iClod status page. It appears that the issue is not contained just to iCloud email as some users are beginning to complain about hiccups with the App Store and iMessage services as well. Moreover, looks like FaceTime is down for some, too...
UPDATE: All services are now back online...