Mayer offers an apology and said it was a hardware failure that caused the outage. "We really let you down this week," she concluded.
Yeah, they did. She added that nearly all Yahoo! email accounts that were affected should have been up and running by Friday afternoon.
But hardware and software failures, despite having backups to backups, will happen that cause an outage. Frankly, The Salt Lake Tribune knows this all too well after a breakdown in system that prints the newspapers.