Confluence installed as a service seems to be started but the server start actually fails

I installed Confluence 2.10 and succeeded to start the server using the startup.bat file.
Then I tried to make Confluence be started by a Windows service. I followed the procedure described on http://confluence.atlassian.com/display/DOC/Start+Confluence+automatically+on+Windows+as+a+Service to deploy the service and start it:
1- service install Confluence210: the service seems installed installServiceResult.png
2- net start Confluence 210: the service seems started startServiceResult.png
So far so good !
But then when I try to access my Confluence pages, I get (after 5 minutes !!) a 404 error: see ServiceDoNotStart.png.
The service is said started but the server failed in its initialization!

Here is what I see in the stdout logs:

7 janv. 2009 10:33:37 org.apache.coyote.http11.Http11Protocol init
INFO: Initialisation de Coyote HTTP/1.1 sur http-8081
7 janv. 2009 10:33:37 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 717 ms
7 janv. 2009 10:33:37 org.apache.catalina.core.StandardService start
INFO: Démarrage du service Tomcat-Standalone
7 janv. 2009 10:33:37 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.14
2009-01-07 10:33:39,338 INFO [Thread-1] [com.atlassian.confluence.lifecycle] contextInitialized Starting Confluence 2.10 (build #1515)
2009-01-07 10:33:39,572 INFO [Thread-1] [beans.factory.xml.XmlBeanDefinitionReader] loadBeanDefinitions Loading XML bean definitions from class path resource [bootstrapContext.xml]
2009-01-07 10:33:40,338 INFO [Thread-1] [beans.factory.xml.XmlBeanDefinitionReader] loadBeanDefinitions Loading XML bean definitions from class path resource [setupContext.xml]
2009-01-07 10:33:44,151 WARN [Thread-1] [atlassian.config.xml.AbstractDom4jXmlConfigurationPersister] saveDocumentAtomically Unable to move C:\confluence-2.10-migr\temp\confluence.cfg.xml32685tmp to C:\Confluence-data2.8.0\confluence.cfg.xml. Falling back to non-atomic overwrite.
7 janv. 2009 10:33:44 org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
7 janv. 2009 10:37:47 org.apache.catalina.core.StandardContext listenerStart
GRAVE: Exception lors de l'envoi de l'évènement contexte initialisé (context initialized) à l'instance de classe d'écoute (listener) com.atlassian.confluence.upgrade.UpgradeLauncherServletContextListener
org.springframework.transaction.UnexpectedRollbackException: Transaction rolled back because it has been marked as rollback-only
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:626)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:314)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy7.publishEvent(Unknown Source)
at com.atlassian.confluence.upgrade.impl.DefaultUpgradeManager.upgrade(DefaultUpgradeManager.java:73)
at com.atlassian.confluence.upgrade.UpgradeLauncherServletContextListener.contextInitialized(UpgradeLauncherServletContextListener.java:26)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3830)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4337)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
7 janv. 2009 10:37:51 org.apache.catalina.core.StandardContext start
GRAVE: Error listenerStart
7 janv. 2009 10:37:51 org.apache.catalina.core.StandardContext start
GRAVE: Erreur de démarrage du contexte [] suite aux erreurs précédentes
7 janv. 2009 10:37:59 org.apache.catalina.core.ApplicationContext log
INFO: Closing Spring root WebApplicationContext
log4j:ERROR LogMananger.repositorySelector was null likely due to error in class reloading, using NOPLoggerRepository.
7 janv. 2009 10:38:19 org.apache.coyote.http11.Http11Protocol start
INFO: Démarrage de Coyote HTTP/1.1 sur http-8081
7 janv. 2009 10:38:19 org.apache.catalina.startup.Catalina start
INFO: Server startup in 282011 ms