I can only get it to work by doing both the useCaches(false) and pre-reading the stream into a BAIS. But it boots twice as slow as normal. I have to do this trick for FileHandlers, JarHandlers, and JarEntry handlers. I'm really nervous that basing everything on a VFS URL will not work with other VMs. There's all this funky shit caching going on behind the scenes that I can only get a glimpse at by decompiing Sun specific JDK code. Some of the problems are hidden within native methods as well. I got all this to work so far by guessing... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3980856#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...