I too have this problem, despite following the example in the JBoss Docs...I am using: jboss-3.0.0_tomcat-4.0.3
I have a .com and a .co.uk which point via DNS to *one* IP address,
but have configured *two* entries in my 'tomcat4-service.xml'.
Each the .com's and the .co.uk's Jboss-web.xml files have each been set up
to reference (via <virtual host>) the intended in tomcat4-service.xml
Thanks for any help in advance!