Problem shutting down tomcat

[Rafael Angarita]

    I just installed tomcat3.3.1 compiling the sources (to increase the 
ThreadPool size to 2000) , but  there's a problem shutting down the java 
process (using tomcat.sh stop),  an exception is thrown  and  the 
process keeps alive (I have to force to finish with shutdown.sh -force 
or sending a SIGKILL)
    The output from tomcat.sh

Using classpath: /usr/local/tomcat/bin/../lib/tomcat.jar
Using JAVA_HOME: /usr/java
Using TOMCAT_HOME: /usr/local/tomcat
Stopping Tomcat.
Stopping tomcat on null:-1 null
Guessed home=/usr/local/tomcat-3.3.1
Exception: java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException
....

    Any suggestion?

    Thanks in advance,

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Rafael Angarita
Administrador de Sistemas
Telcel Bellsouth
(+58212)(2009765)