> Additionally you can put log4j.properties in its own jar and put it in > $tomcat/lib.
That's the default for Tomcat 6+, but formally the location for shared classpath entries is defined in the property common.loader in $tomcat/conf/catalina.properties. So e.g. to "re-establish" the older structure with common/classes etc. you would edit this entry accordingly. - Tor Iver
