Any guesses as to what Delta might be tuning up tomorrow night?
From Delta.com:
SkyMiles Tune-up:
We will be performing routine maintenance on our SkyMiles systems overnight on Sunday, April 1, beginning at 3:30am EDT. This maintenance effort will last only for a couple of hours and during this time you may have intermittent difficulty logging in to access your account information and booking award travel. We apologize for any inconvenience this may cause.
Last Updated: March 30, 2012, 5pm EDT (-4 GMT)