>No, I did not save the printer environment. This problem started all of a sudden long after the application version had been released. One day it was printing fine and the next day with the same version of the software the problem started.
NO WAY!
I am sorry to said that but there is NO WAY that the same application started to print different way.
Are you sure that they are not changed THEIR printer properties to print Landscape.
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.