Updated December 17th, 2015.
Apple put out a “supplemental” 10.6.8 update today (July 25th, 2011). Among other important fixes, it restores network printing functionality that broke with the original 10.6.8. Apple puts it this way: “resolves issues with certain network printers that pause print jobs immediately and fail to complete.”
Sounds good to me.
Go to Software Update under your Apple menu and get this fix.