On page http://www.jboss.org/jbosssecurity/download/index.html lnk to download source of JBossSX 2.0.1.GA (http://repository.jboss.org/maven2/org/jboss/security/jbosssx/2.0.1-GA) is bad.
Link to download source of JBossSX 2.0.0.GA is work
(http://www.jboss.org/file-access/default/members/jbosssecurity/freezone/releases/jboss-sx/2.0.0.GA/source/jbosssx-sources.jar)