Mac OS 10.5.6, VW-2008, I also am having the same orientation problem but using B-Size on TWO different printers. A Sharp AR-164(obsolete but still good), and a XEROX Phaser 5500DT. I have updated drivers done lots of page setup and size tweaking and the image still shows up one way on Print Preview, and prints oriented at 90?.
I am not above thinking it is the Intel CPU, or the Mac OS that is causing the problem but it is very very very frustrating.