Our measurements were made with the JAVA VM 1.2, enabled JIT and native threads on SUN SOLARIS 2.6. A single producer was publishing message objects encapsulating a single string from one network (SUN ULTRA 60, 256 Mb RAM, 9 Gb harddisk), to subscribers equally distributed over two further networks; one composed of all together 60 SUN SUPERSPARC 20 stations (model 502: 2 CPU, 64 Mb RAM, 1Gb harddisk), and the second one composed of 60 SUN ULTRA 10 (256 Mb RAM, 9 Gb harddisk) stations. The individual stations and the different networks where communicating via FAST ETHERNET.