Error while starting tomcat server in eclipse for struts 2 web application

I am trying to implement a sample web application using struts 2 in eclipse. I have configured everything. But when I am starting tomcat it is displaying below error

Sep 15, 2010 11:59:46 AM org.apache.catalina.core.StandardContext start SEVERE: Error filterStart Sep 15, 2010 11:59:46 AM org.apache.catalina.core.StandardContext start SEVERE: Context startup failed due to previous errors

What could be the possible issue ?

below is the whole trace while starting tomcat.

Sep 15, 2010 12:30:10 PM org.apache.coyote.http11.Http11Protocol init

INFO: Initializing Coyote HTTP/1.1 on http-8080

Sep 15, 2010 12:30:10 PM org.apache.catalina.startup.Catalina load

INFO: Initialization processed in 1062 ms

Sep 15, 2010 12:30:10 PM org.apache.catalina.core.StandardService start

INFO: Starting service Catalina

Sep 15, 2010 12:30:10 PM org.apache.catalina.core.StandardEngine start

INFO: Starting Servlet Engine: Apache Tomcat/5.0.28

Sep 15, 2010 12:30:10 PM org.apache.catalina.core.StandardHost start

INFO: XML validation disabled

Sep 15, 2010 12:30:16 PM org.apache.catalina.core.StandardContext start

SEVERE: Error filterStart

Sep 15, 20开发者_运维技巧10 12:30:16 PM org.apache.catalina.core.StandardContext start

SEVERE: Context startup failed due to previous errors

Sep 15, 2010 12:30:19 PM org.apache.catalina.core.StandardHost getDeployer

INFO: Create Host deployer for direct deployment ( non-jmx )

Sep 15, 2010 12:30:19 PM org.apache.coyote.http11.Http11Protocol start

INFO: Starting Coyote HTTP/1.1 on http-8080

Sep 15, 2010 12:30:19 PM org.apache.jk.common.ChannelSocket init

INFO: JK2: ajp13 listening on /0.0.0.0:8009

Sep 15, 2010 12:30:19 PM org.apache.jk.server.JkMain start

INFO: Jk running ID=0 time=0/47 config=null

Sep 15, 2010 12:30:19 PM org.apache.catalina.startup.Catalina start

INFO: Server startup in 9388 ms

This issue is with the version of Tomcat. Earlier I was using tomcat 5. Now I switched to tomcat 6. It got fixed.