tomcat问题,经常挂死！！
jdk:1.4.2_05
tomcat:tomcat-4.1.18
log包：log4j-1.2.8.jar

tomcat运行一段时间就会自动挂死，导致系统无法登陆！！

org.apache.commons.logging.LogConfigurationException:   org.apache.commons.logging.LogConfigurationException:   org.apache.commons.logging.LogConfigurationException:   Class   org.apache.commons.logging.impl.Log4JCategoryLog   does   not   implement   Log
                at   org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:555)
                at   org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:289)
                at   org.apache.commons.logging.LogFactory.getLog(LogFactory.java:409)
                at   org.apache.tomcat.util.log.CommonLogHandler.log(CommonLogHandler.java:97)
                at   org.apache.tomcat.util.log.Log.log(Log.java:198)
                at   org.apache.tomcat.util.log.Log.log(Log.java:192)
                at   org.apache.tomcat.util.log.Log.log(Log.java:174)
                at   org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:533)
                at   java.lang.Thread.run(Thread.java:534)
Caused   by:   org.apache.commons.logging.LogConfigurationException:   org.apache.commons.logging.LogConfigurationException:   Class   org.apache.commons.logging.impl.Log4JCategoryLog   does   not   implement   Log
                at   org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:420)
                at   org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:548)
                ...   8   more
Caused   by:   org.apache.commons.logging.LogConfigurationException:   Class   org.apache.commons.logging.impl.Log4JCategoryLog   does   not   implement   Log
                at   org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:416)
                ...   9   more


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jdk:1.4.2_05
tomcat:tomcat-4.1.18
是你的tomcat和jdk版本不兼容的问题,装个高点的tomcat,最好在5.0以上的吧.
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LogConfigurationException,Log4j配置有问题
------解决方案--------------------
server.xml 配置出问题
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兼容？