Have you tried deploying without including those jars in the WEB-INF directory of your webapp? Are you using versions of these jars that are very old?
Thanks for your reaponse.
Yes, I put these jar files under myapp/WEB-INF/lib directory (that's how it work with Tomcat 4.1.12 stand alone version.)
I think these jars files are __very old__. However, because it works with Tomcat stand alone version, I think I may deploy it in a wrong way in jBoss-Tomcat bundle environment.