Hi, if set logback to JNDI and put all logback and slf4j libs in tomcat6/lib directory. If i deploy the same WAR, with a different name and context-name in the web.xml, twice, the ContextJNDISelector is only called once. That results in that the second WAR uses the logback config of the first WAR. Any idea why ContextJNDISelector is only called once? The problem is even more serious. If u undeploy the first WAR, the JNDI-context is removed. But if i redeploy the first WAR again, i get no log messages at all, because ContextJNDISelector isn't called again. I don't know how to proceed. Any idea? Cheers, Ingo