You are not alone. Same problem here on a brand new computer with 2GB of RAM. Three minutes total to print a small, black and white 1 bit, 15 page pdf file. Previous to 8.1.2 (8.1.1) the same version printer drivers (Xerox Phaser 8860 Series) worked fine (both PS and PCL versions). I've been trolling for a fix this morning - so far nothing.