Can somebody tell me WTF this is?

"You connection has been temporarily restricted to this realm. Please log in at another time."

???

I was just tombing. I was simply in one game, hadn't gone in and out of any or whatever. Just playing. Only game I've even been in for the past few hours. I got a connection interrupted (fair enough, sometimes that happens when a game I'm in gets really busy or lags) but then it kicked me off B.net entirely and now I can't even log back in. Not fair! I didn't do anything wrong!