Hello, I am working on glassfish 2.2.1 and trying to use LogBack. I followed the tutorial http://hwellmann.blogspot.com/2010/12/glassfish-logging-with-slf4j-part-2.ht... I tried every possible content for the logback.xml but the log file of glassfish is empty even by no  logback.xml file is set. Did anybody tried logback with glassfish ? My initial requirement is being able to use filters like sl4j or log4j for the log which It is not possible to do on java.util.logging system that is used by glassfish. Thanks in advance Nicolas