Detection of printers in FC4

[gslink]

FC3 (I need a more stable system than Rawhide) has about the correct 
printing detection.  What happens if you have several hundred printers 
on a network.  You do not want detection as these are likely to be light 
duty, private printers.  Currently, CUPS publishes those printers that 
are marked shared queue and these are picked up by all machines on the 
network.  This is fine but searching for and publishing printers that 
just have a lan address is wrong.  On a large lan this could take hours 
and result in a long printer listing.