The problem hasn't gone away yet. Seems that in target "refdoc" that ant task to build the subproject doesn't use ANT_OPTS, or at least not -Xmx or -Xms. Still getting apparently random success or failure at getting a good seam_reference.pdf, almost but not exactly tied to an out of memory error in the Ant output. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4008902#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...