Estou testando o cache do Spring e esse é o meu arquivo de contexto

<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:cache="http://www.springframework.org/schema/cache"
    xsi:schemaLocation=
    "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">

    <cache:annotation-driven cache-manager="simpleCacheManager"/>

    <bean id="simpleCacheManager" class="org.springframework.cache.support.SimpleCacheManager">
        <property name="caches">
            <set>
                <bean class="org.springframework.cache.concurrent.ConcurrentCacheFactoryBean">
                    <property name="name" value="alfresco"/>
                </bean> 
                <bean class="org.springframework.cache.concurrent.ConcurrentCacheFactoryBean">
                    <property name="name" value="alfresco_article"/>
                </bean> 
                <bean class="org.springframework.cache.concurrent.ConcurrentCacheFactoryBean">
                    <property name="name" value="alfresco_action"/>
                </bean>
            </set>
        </property>
    </bean>

Eu adicionei toda a biblioteca requerida, mas não posso validar a biblioteca porque o Eclipse ainda me diz que o AOPAlliance.jar e o org.springframework.context-3.1.1.RELEASE.jar estão faltando.

O erro é:

Várias anotações são encontradas nesta linha: class org.springframework.cache.concurrent.ConcurrentCacheFactoryBean not found.

RESOLVIDO mudando para org.springframework.cache.concurrent.ConcurrentMapCacheFactoryBean

mas, chamando a url isso acontece:

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from class path resource [configuration-context.xml]; nested exception is java.lang.NoClassDefFoundError: org/springframework/aop/config/AopNamespaceUtils
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause

org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from class path resource [configuration-context.xml]; nested exception is java.lang.NoClassDefFoundError: org/springframework/aop/config/AopNamespaceUtils
    org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:412)

aop-alliance.jar e org.springframework.aop-3.1.1.RELEASE.jar são ambos em classpath.

Qualquer pista?

Obrigado,
Andrea