JBossCommon is now a seperate SVN module: https://svn.jboss.org/repos/common/ "common-old" is more or less the commons module taken out from JBoss-4.0.x, and from that we produced jboss-common v1.0.0.CR1 used in jboss-4.0.5.CR1 The "head" of commons is being refactored by Ruel to produce a version 2 of commons, with the logging subsystem broken out, to be used in jboss head, and other places: common-core/ common-logging-jdk/ common-logging-log4j/ common-logging-spi/ View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3969500#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...