can't start jboss server

[shimon]

Can anyone please help me?
I just downloaded jboss3.0, when I try running it using
run.bat I get 2 log4j errors and a MethodNotFoundException

log4j:ERROR No appenders could be found for category (org.jboss.system.server.Server).
log4j:ERROR Please initialize the log4j system properly.
java.lang.NoSuchMethodError
at org.jboss.deployment.SARDeployer.parseXMLClasspath(SARDeployer.java:269)
at org.jboss.deployment.SARDeployer.init(SARDeployer.java:155)
at org.jboss.deployment.MainDeployer.init(MainDeployer.java:556)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:501)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:481)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:465)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:314)
at org.jboss.system.server.ServerImpl.start(ServerImpl.java:216)
at org.jboss.Main.boot(Main.java:142)
at org.jboss.Main$1.run(Main.java:375)
at java.lang.Thread.run(Thread.java:484)
Shutting down
Shutdown complete

[shimon]

I found the problem, posting it, maybe someone will benefit. I had in my java_home/jre/lib/ext a log4j.jar and an old xml parser jar. Once removed everything works fine.