I work at a retail print shop and use photoshop often to print documents.
I've noticed ever since we upgraded to CS6, PS will save the print settings between unrelated files. Eg: I set the print settings to print 30 copies from a certain tray in our printer and grayscale. I quit the program. Then the next time I open a completely different customer file, hit print, the same settings (number of copies and all) are still set to print that document.
This seems like a good idea, but it makes for a lot of wasted paper when we are expecting to hit print and it go to the default settings.
I'm using a Windows 7 installed PC, if that makes any difference.