Tenho um problema que não consigo resolver. Eu crio um projeto web no Eclipse, utilizo JSF e Hibernate, adiciono os jars tudo certinho, e consigo executar de boa,
mais se eu fechar o Eclipse e tentar executar o programa novamente aparece a seguinte mensagem de erro:
31/03/2011 00:07:35 org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/lib/jvm/java-6-openjdk/jre/lib/i386/server:/usr/lib/jvm/java-6-openjdk/jre/lib/i386:/usr/lib/jvm/java-6-openjdk/jre/../lib/i386:/usr/lib/jvm/java-6-openjdk/jre/lib/i386/client:/usr/lib/jvm/java-6-openjdk/jre/lib/i386:/usr/lib/xulrunner-addons:/usr/lib/xulrunner-addons:/usr/java/packages/lib/i386:/usr/lib/jni:/lib:/usr/lib
31/03/2011 00:07:35 org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:Matricula' did not find a matching property.
31/03/2011 00:07:35 org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
31/03/2011 00:07:35 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 807 ms
31/03/2011 00:07:35 org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
31/03/2011 00:07:35 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.32
31/03/2011 00:07:36 org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class com.sun.faces.config.ConfigureListener
java.lang.ClassNotFoundException: com.sun.faces.config.ConfigureListener
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4148)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4704)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
31/03/2011 00:07:36 org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
31/03/2011 00:07:36 org.apache.catalina.core.StandardContext start
SEVERE: Error listenerStart
31/03/2011 00:07:36 org.apache.catalina.core.StandardContext start
SEVERE: Context [/Matricula] startup failed due to previous errors
31/03/2011 00:07:36 org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor host-manager.xml
31/03/2011 00:07:36 org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor manager.xml
31/03/2011 00:07:36 org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory docs
31/03/2011 00:07:36 org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory examples
31/03/2011 00:07:36 org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
31/03/2011 00:07:36 org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
31/03/2011 00:07:36 org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory ROOT
31/03/2011 00:07:36 org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
31/03/2011 00:07:36 org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
31/03/2011 00:07:36 org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/47 config=null
31/03/2011 00:07:36 org.apache.catalina.startup.Catalina start
INFO: Server startup in 1365 ms
Sou iniciante em programação web e não sei qual é o problema 
Se alguem souber como resolver vai me ajudar bastante :thumbup:
valeu!!