Tomcat 4 - jira NPE

com.atlassian.jira.config.ConfigurationException: Could not configure listeners: java.lang.NullPointerException
at com.atlassian.jira.config.DefaultConfig.loadListeners(DefaultConfig.java:138)
at com.atlassian.jira.config.DefaultConfig.<init>(DefaultConfig.java:49)
at com.atlassian.jira.config.ConfigFactory.getConfig(ConfigFactory.java:26)
at com.atlassian.jira.service.LoadTimer.contextInitialized(LoadTimer.java:73)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3197)

Also, I cannot get log4j to be configured right. where should I be putting my log4j.properties? tried common/lib and server/lib and shared/lib and WEB-INF/lib

Ian