I have several reports where this has happened and the scenario is as follows:

The reports are supposed to print in landscape and were printing correctly when for no apparent reason they started to print in portrait. A new version of the application had not been installed and yet they started to print in portrait. When I printed the reports using the same production version of the application they printed correctly.

While trouble shooting the reports on the users computers I determined that if I installed the printer that I used to develop and test the reports, the reports start printing correctly even though the user does not print to the newly installed printer. This would be alright, but when the report comes up this printer I justed installed comes up as the default printer and they print to it which is two floors down from where they sit and thus they just print it again.

I never save the printer environment in my reports and have even gone into the report's tables to strip out any printer specific information but that hasn't helped. Has anyone run into a similar situation out there?