PRoblems with logj4

Hello,

I have a problem with log4j.
When I start tomcat i get the following message:

log4j:WARN No appenders could be found for logger (org.apache.commons.beanutils.ConvertUtils).
log4j:WARN Please initialize the log4j system properly.

I have a log4j configuration file in WEB-INF. This is the content:
#begin log4j.props
#IMPORTANT - Watch for trailing whitespaces after each statement!!!
log4j.rootCategory=warn, stdout, logFile
log4j.category.org.dbforms=WARN
#out to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
#out to file
log4j.appender.logFile=org.apache.log4j.RollingFileAppender
#tomcat uses bin as current directory when writing log
log4j.appender.logFile.File=c:\log4j_log.txt
log4j.appender.logFile.MaxFileSize=100KB
log4j.appender.logFile.MaxBackupIndex=1

My WEB-INF/web.xml file is this:
<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
    "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">

<web-app>
    <servlet>
        <servlet-name>org.dbforms.ConfigServlet</servlet-name>
        <servlet-class>org.dbforms.servlets.ConfigServlet</servlet-class>
        <init-param>
            <param-name>log4j.configuration</param-name>
            <param-value>/WEB-INF/log4j.properties</param-value>
        </init-param>

In WEB-INF/lib I have the following jar:
commons-beanutils-1.6.jar
commons-collections-2.1.jar
commons-dbcp-1.1.jar
commons-digester-1.5.jar
commons-fileupload-1.0.jar
commons-httpclient-2.0.jar
commons-lang-2.0.jar
commons-logging-1.0.3.jar
commons-pool-1.1.jar
commons-validator-1.0.2.jar
dbforms2.3.jar
hsqldb-1.7.1.jar
httpunit-1.5.4.jar
jasperreports-0.5.0.jar
jtds-0.8.jar
junit-3.8.1.jar
log4j-1.2.8.jar
maxq-0.95dev.jar
msbase.jar
mssqlserver.jar
msutil.jar
oro-2.0.7.jar
protomatter-1.1.8-pre5.jar
servletapi-2.3.jar
xalan.jar
xercesImpl.jar
xmlParserAPIs-2.2.1.jar

I am using dbforms 2.3.

Where is the problem? and How can i solve it?

Thanks.