Turbine let us know about some upcoming downtime:
The Turbine Game Servers and http://myaccount.turbine.com will be offline for maintenance on Monday, September 22nd from 7:00 AM to 9:00 AM Eastern (-4 GMT). The forums will remain up, but players may not be able to log in until 10:00 AM Eastern (-4 GMT). Thanks for your patience, and we'll see you back in the game soon!
Note that LOTRO has some differing times.