I have several Windows 7 machines most 64 biut but one is 32 bit (laptop). All have Reader 10.1.2 installed. I am printing to a Xerox Phaser 8560MFP, which uses Postscript. The 64 bit machines print perfectly. I am slecting print to Fit. The 32 bit machine prints A4 pages as A5. Selecting Advanced|Print as image results in black and white image, not colour. Selecting "choose paper source by pdf size" results in thumbnails on both sides of the page. Driver is up to date.
Anybody got any idea what is going on??
Try using the PCL driver - just as a test - to see if it makes any difference. Set up two seperate printers, one that uses PS and one that uses PCL.
At least it will help you find out if it is a driver issue.