hi:

i think tomcat is loading problems with yars or vica versa.
sudo /etc/init.d/tomcat5 start


=== starting tomcat ==============================================
Starting Tomcat 5 servlet engine using Java from
/usr/lib/j2sdk1.4.2_11: tomcat5

=== tomcat log: ======================================
Using CATALINA_BASE: /var/lib/tomcat5
Using CATALINA_HOME: /usr/share/tomcat5
Using CATALINA_TMPDIR: /var/lib/tomcat5/temp
Using JAVA_HOME: /usr/lib/j2sdk1.4.2_11
Using Security Manager
Created MBeanServer with ID: b82368:10b7adbfd90:-8000:jessica:1
28/05/2006 21:58:28 org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8180
28/05/2006 21:58:28 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 2399 ms
28/05/2006 21:58:28 org.apache.catalina.core.StandardService start
INFO: Starting service Tomcat-Standalone
28/05/2006 21:58:29 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.0
28/05/2006 21:58:29 org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
28/05/2006 21:58:29 org.apache.catalina.core.StandardHost getDeployer
INFO: Create Host deployer for direct deployment ( non-jmx )
28/05/2006 21:58:29 org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL
file:/var/lib/tomcat5/conf/Catalina/localhost/balancer.xml
28/05/2006 21:58:30 org.apache.commons.beanutils.MethodUtils
getMatchingAccessibleMethod
WARNING: Cannot use JVM pre-1.4 access bug workaround due to
restrictive security manager.
28/05/2006 21:58:30 org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL
file:/var/lib/tomcat5/conf/Catalina/localhost/admin.xml
28/05/2006 21:58:36 org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL
file:/var/lib/tomcat5/conf/Catalina/localhost/manager.xml
28/05/2006 21:58:37 org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL
file:/var/lib/tomcat5/conf/Catalina/localhost/tomcat-docs.xml
28/05/2006 21:58:37 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /yars-beta2 from URL
file:/var/lib/tomcat5/webapps/yars-beta2
28/05/2006 21:58:37 org.apache.catalina.core.StandardContext start
SEVERE: Error listenerStart
28/05/2006 21:58:37 org.apache.catalina.core.StandardContext start
SEVERE: Context startup failed due to previous errors
28/05/2006 21:58:37 org.semanticweb.yars.webapp.Listener contextDestroyed
INFO: closing diskstore
28/05/2006 21:58:37 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path from URL
file:/var/lib/tomcat5/webapps/ROOT
28/05/2006 21:58:38 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /jsp-examples from
URL file:/var/lib/tomcat5/webapps/jsp-examples
28/05/2006 21:58:38 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /yars from URL
file:/var/lib/tomcat5/webapps/yars
28/05/2006 21:58:38 org.apache.catalina.core.StandardContext start
SEVERE: Error listenerStart
28/05/2006 21:58:38 org.apache.catalina.core.StandardContext start
SEVERE: Context startup failed due to previous errors
28/05/2006 21:58:38 org.semanticweb.yars.webapp.Listener contextDestroyed
INFO: closing diskstore
28/05/2006 21:58:38 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /servlets-examples
from URL file:/var/lib/tomcat5/webapps/servlets-examples
28/05/2006 21:58:38 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /webdav from URL
file:/var/lib/tomcat5/webapps/webdav
28/05/2006 21:58:39 org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8180
28/05/2006 21:58:39 org.apache.jk.common.ChannelSocket init
INFO: JK2: ajp13 listening on /0.0.0.0:8009
28/05/2006 21:58:39 org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=22/381
config=/var/lib/tomcat5/conf/jk2.properties
28/05/2006 21:58:40 org.apache.catalina.startup.Catalina start
INFO: Server startup in 11371 ms
==================================================================
any ideas?

cheers
mark