After reading Dave's post about Tomcat 5, I got interested and decided to try it out. For those that don't know, Tomcat 4.0.5 Alpha was released today. I figured out how to make AppFuse run through a series of steps. Basically, I had to put log4j.jar in $CATALINA_HOME/common/lib and appfuse.xml in $CATALINA_HOME/conf/Catalina/localhost. Details are on my wiki.