[RESOLVIDO] Atualizar Spring 2.0.4 p/ 2.5.5 - HibernateException

public class UsuarioDAOImpl {

	private SessionFactory sessionFactory;

	public User getUserByLogin(String login) {

		Session session = getSession();

		Criteria criteria = session.createCriteria(User.class);
		criteria.add(Restrictions.eq("login", login));

		return (User) criteria.uniqueResult();
	}

	protected Session getSession() {
		return getSessionFactory().getCurrentSession();
	}

	public SessionFactory getSessionFactory() {
		return sessionFactory;
	}

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}
}

<bean id="txInterceptor"
		class="org.springframework.transaction.interceptor.TransactionInterceptor">
		<property name="transactionManager" ref="transactionManager" />
		<property name="transactionAttributeSource" ref="transactionAttributeSource" />
	</bean>

	<bean id="transactionAttributeSource" class="org.springframework.transaction.interceptor.NameMatchTransactionAttributeSource">
		<property name="properties">
			<value>
				delete*=PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED
				add*=PROPAGATION_REQUIRED,ISOLATION_READ_COMMITTED
				*=readOnly
			</value>
		</property>
	</bean>

	<bean id="autoProxyCreator"
		class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
		<property name="interceptorNames">
			<value>txInterceptor</value>
		</property>
		<property name="beanNames">
			<value>*DAO</value>
		</property>
	</bean>

	<bean id="transactionManager"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<bean id="sessionFactory" name="sessionFactory"
		class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="configLocation" value="${hibernate.config.location}" />
	</bean>