Bit of a weird one...
Our network printer (OKI C711) is set up at a server level to print in black and white/grayscale, but when the printer is added to a client's workstation the defaults of printing in colour still pull through.
The settings can then be changed to print in grayscale so this isn't a major problem, but it's a bit annoying when a new user adds the printer to ensure they print in colour.
We recently upgraded to SBS 2011 so I'm not sure whether this would have something to do with it, it seemed to be fine before the upgrade.