Problemas com Log4j

Assuntos Gerais Agile
#1

Galera,

Estou com o problema na minha aplicacao. Estou utilizando o Quartz para agendar algumas tarefas na minha aplicacao. Quando inicio o meu tomcat esta dando esse erro. Sendo que o meu log4j.jar esta no meu path. Nao estou entendo esse erro.

06/11/2009 16:50:52 org.apache.catalina.loader.WebappClassLoader loadClass
Exception in thread "ParserControlTrackScheduler_Worker-1" java.lang.NoClassDefFoundError: org/apache/log4j/spi/VectorWriter
INFO: Illegal access: this web application instance has been stopped already.  Could not load org.apache.log4j.spi.VectorWriter.  The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
        at org.apache.log4j.spi.LoggingEvent.<init>(LoggingEvent.java:154)
java.lang.IllegalStateException
        at org.apache.log4j.Category.forcedLog(Category.java:388)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1273)
        at org.apache.log4j.Category.log(Category.java:853)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
        at org.apache.commons.logging.impl.Log4JLogger.error(Log4JLogger.java:257)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:211)
        at org.apache.log4j.spi.LoggingEvent.<init>(LoggingEvent.java:154)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525)
        at org.apache.log4j.Category.forcedLog(Category.java:388)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.spi.VectorWriter
        at org.apache.log4j.Category.log(Category.java:853)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
        at org.apache.commons.logging.impl.Log4JLogger.error(Log4JLogger.java:257)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:211)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525)
        ... 6 more

Ja coloquei o log4j dentro da lib da tomcat e nada.

Atenciosamente

#2