Hi, On our servers, we found Jboss stopped updating server.log after running a couple of days. We are using DailyRollingFileAppender like below: <appender name="FILE" class="org.jboss.logging.appender.DailyRollingFileAppender"> <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"/> <param name="File" value="${jboss.server.log.dir}/server.log"/> <param name="Append" value="true"/> <param name="Threshold" value="INFO"/> <param name="MaxFileSize" value="5000KB"/> <param name="MaxBackupIndex" value="1"/> <param name="DatePattern" value="'.'yyyy-MM-dd"/> </appender> We notice that the java process opened a "deleted" file when the problem happened with a lsof command: /home/jboss-4.3.0/server/main/log/server.log~ (deleted) The .jar we are using is slf4j-log4j12-1.5.6.jar. When the problem happened, application functionality worked fine. And after we make a "touch jboss-log4j.xml", JBoss started the update server.log again. Thanks, Tim Ke