Both systems I am working with have the Asus P4P800-E Deluxe Motheroard. Both were upgraded to SP2 recently. Went back to SP1 on one but it still does the date swap. Thinking it must be some compatibility issue between the board and SP2 though i don't pretend to understand how. Have to pursue it with Asus I guess. Off on holidays for a week though so it will have to wait until I return. Thank you everyone for the suggestions though!