Looking in the /var/log/syslog file: I find the following stack trace when tomcat is restarted:

Sep 23 11:39:46 t43 jsvc.exec[29494]: Could not load Logmanager "org.apache.juli.ClassLoaderLogManager"
Sep 23 11:39:46 t43 jsvc.exec[29494]: java.security.AccessControlException: access denied (java.lang.RuntimePermission setContextClassLoader)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.checkPermission(AccessController.java:546)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Thread.setContextClassLoader(Thread.java:1351)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$Cleaner.<init>(LogManager.java:204)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$Cleaner.<init>(LogManager.java:198)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.<init>(LogManager.java:235)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.ClassLoaderLogManager.<init>(ClassLoaderLogManager.java:45)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.reflect.Constructor.newInstance(Constructor.java:513)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance0(Class.java:355)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance(Class.java:308)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$1.run(LogManager.java:164)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.<clinit>(LogManager.java:156)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.Logger.getLogger(Logger.java:273)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.DirectJDKLog.<init>(DirectJDKLog.java:71)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.DirectJDKLog.getInstance(DirectJDKLog.java:178)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:170)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:241)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getLog(LogFactory.java:296)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:54)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.reflect.Constructor.newInstance(Constructor.java:513)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance0(Class.java:355)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance(Class.java:308)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:139)
Sep 23 11:39:46 t43 jsvc.exec[29494]: Can't load log handler "1catalina.org.apache.juli.FileHandler"
Sep 23 11:39:46 t43 jsvc.exec[29494]: java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler
Sep 23 11:39:46 t43 jsvc.exec[29494]: java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.net.URLClassLoader$1.run(URLClassLoader.java:200)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.net.URLClassLoader.findClass(URLClassLoader.java:188)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.ClassLoader.loadClass(ClassLoader.java:307)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.ClassLoader.loadClass(ClassLoader.java:252)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$3.run(LogManager.java:383)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.addLogger(LogManager.java:376)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$1.run(LogManager.java:180)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.<clinit>(LogManager.java:156)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.Logger.getLogger(Logger.java:273)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.DirectJDKLog.<init>(DirectJDKLog.java:71)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.DirectJDKLog.getInstance(DirectJDKLog.java:178)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:170)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:241)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getLog(LogFactory.java:296)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:54)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.reflect.Constructor.newInstance(Constructor.java:513)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance0(Class.java:355)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance(Class.java:308)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:139)
Sep 23 11:39:46 t43 jsvc.exec[29494]: Can't load log handler "1catalina.org.apache.juli.FileHandler"
Sep 23 11:39:46 t43 jsvc.exec[29494]: java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler
Sep 23 11:39:46 t43 jsvc.exec[29494]: java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.net.URLClassLoader$1.run(URLClassLoader.java:200)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.net.URLClassLoader.findClass(URLClassLoader.java:188)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.ClassLoader.loadClass(ClassLoader.java:307)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.ClassLoader.loadClass(ClassLoader.java:252)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$7.run(LogManager.java:918)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.initializeGlobalHandlers(LogManager.java:911)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.access$900(LogManager.java:129)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$RootLogger.addHandler(LogManager.java:1008)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$3.run(LogManager.java:401)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.addLogger(LogManager.java:376)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$1.run(LogManager.java:180)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.<clinit>(LogManager.java:156)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.Logger.getLogger(Logger.java:273)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.DirectJDKLog.<init>(DirectJDKLog.java:71)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.DirectJDKLog.getInstance(DirectJDKLog.java:178)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:170)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:241)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getLog(LogFactory.java:296)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:54)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.reflect.Constructor.newInstance(Constructor.java:513)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance0(Class.java:355)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance(Class.java:308)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:139)
Sep 23 11:39:46 t43 jsvc.exec[29494]: Can't load log handler "2localhost.org.apache.juli.FileHandler"
Sep 23 11:39:46 t43 jsvc.exec[29494]: java.lang.ClassNotFoundException: 2localhost.org.apache.juli.FileHandler
Sep 23 11:39:46 t43 jsvc.exec[29494]: java.lang.ClassNotFoundException: 2localhost.org.apache.juli.FileHandler
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.net.URLClassLoader$1.run(URLClassLoader.java:200)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.net.URLClassLoader.findClass(URLClassLoader.java:188)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.ClassLoader.loadClass(ClassLoader.java:307)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.ClassLoader.loadClass(ClassLoader.java:252)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$7.run(LogManager.java:918)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.initializeGlobalHandlers(LogManager.java:911)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.access$900(LogManager.java:129)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$RootLogger.addHandler(LogManager.java:1008)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$3.run(LogManager.java:401)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.addLogger(LogManager.java:376)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager$1.run(LogManager.java:180)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.security.AccessController.doPrivileged(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.LogManager.<clinit>(LogManager.java:156)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.util.logging.Logger.getLogger(Logger.java:273)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.DirectJDKLog.<init>(DirectJDKLog.java:71)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.DirectJDKLog.getInstance(DirectJDKLog.java:178)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:170)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:241)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.juli.logging.LogFactory.getLog(LogFactory.java:296)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:54)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.reflect.Constructor.newInstance(Constructor.java:513)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance0(Class.java:355)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat java.lang.Class.newInstance(Class.java:308)
Sep 23 11:39:46 t43 jsvc.exec[29494]: ^Iat org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:139)