] A U.S.-Canadian government investigation of the massive
] Aug. 14 power outage in the Northeast singles out a
] series of operators' mistakes, computer failures,
] violations of grid rules and inadequate maintenance by
] FirstEnergy Corp., the Akron-based utility serving
] northern Ohio, as the primary causes of the largest
] blackout in North American history.

You probably already knew this, but in case you didn't get the memo...

Investigators Pinpoint Cause of August Blackout (washingtonpost.com)