Log4j warnings?

[Scott Semyan]

I am getting the following warnings in my console during Tomcat startup
or deployment. Is this something I should be concerned about?
 
Mar 16, 2005 12:27:14 PM org.apache.catalina.core.StandardHostDeployer
install
INFO: Processing Context configuration file URL
file:D:\Apache\Tomcat_5_0\conf\Catalina\localhost\PetList.xml
log4j:WARN No appenders could be found for logger
(org.apache.catalina.session.ManagerBase).
log4j:WARN Please initialize the log4j system properly.
 
Scott Semyan