You are totally correct to assume it is with the drivers for the printer and video cards.

I have spoken to Microsoft on this issue and there are many problems with certain printers. One big one is HP. Practically all HP drivers have a memory leak. Also the screen resolution for the video card does affect the preview. I have noticed this and explained to our clients that it is an issue with Microsoft and not the actual product.

Hope fully this info helps to explain something to your client

Life is great enjoy it to the MAX...
Shawn