Is it just me, or is OS X shared printing broken beyond all repair?
I spend an inordinate amount of time dealing with print failures on Leopard and/or Snow Leopard shared Brother USB printers using Apple provided drivers. The only reliable printing I've had with OS X was with an ethernet connected network printer. 
Yet another example of why general purpose computers are dying (and I've a lot more to say on that ... later).
 The very best, most reliable, printing I ever experienced was using Mac Classic, AppleTalk, and Apple's LaserWriter Select (not sure of product name) in the early 1990s. I'm planning to donate our Brother HL-2140 and buy a Brother networked printer.