A long time ago (early 1990's, IIRC), I came across a Novell Netware LAN in which none of the Mac OS clients could print to a then-very-costly laser printer sha

A long time ago (early 1990's, IIRC), I came across a Novell Netware LAN in which none of the Mac OS clients could print to a then-very-costly laser printer shared on the network if a particular a Windows 3.0 client elsewhere the LAN was powered off. It turns out that when the costly printer was purchased, there wasn't a Mac OS driver available for it, so the people who installed the LAN created their own homemade print queue management system, relying on a batch file running permanently in that one Windows client. The batch file would take .eps files, saved on a shared folder by the Mac clients, and send them to the network printer using Windows printer drivers. Whenever that Windows client freezed, was reset, or was powered off, printing to that one printer would stop working for all the Macs at the same time.