Departamento de Informática -- Universidade Federal do Paraná, Brazil
Debian GNU/Linux is used in 90% of the hosts in the Department. The users are Computer Science graduate and undergraduate students, researchers and the University staff.
We have almost 200 hosts, 150 being X-terminals diskless (486, pentium, pentium-II, K6 and K6II). These X-terminals are connected to 8-10 modern servers (Athlon 1.4GHz). There are 2-4 NFS servers, WWW-servers, Mail-servers.