I received a confirmation that my upgrade EWR-HKG on 1/6/2011 cleared. It states departure to be 1/6 and Arrival to also be 1/6. This is incorrect, as the arrival is Jan 7. The original flight confirmation had it correct.

If this is an algorithm probelm, it is fairly serious. Someone reading this, and not referring to the original confirmation, may well make reservations for a connecting flight on 1/6, which they would most definitely miss.