Has Apple's Robot Canceled Your iPad Pre Order
It appears if you make changes to your iPad pre order, Apple's computer robot will determine you are ordering too many iPads and cancel all your current and future orders within three days of your transaction.
Appealing to a human doesn't seem to help for if the human modifies your account and resubmits an order the robot will spot it and cancel it again in about three days.
Moral don't mess with your order if you expect an iPad and don't order more than two online.
That might be what Apple fixed this morning after complaints about their robot's heavy hand.