The other day I heard a tech support guy on the phone asking the customer "Have
you tried to reset the PRAM of those 80 eMacs?". Later asking details from him
(why he said that), he explained that the customer had a lab with 80 eMacs and
some printer problems..
(Maybe if you want to try resetting PRAM, do it on 1-2 Macs, not on all 80??)