JSF+Spring+Hibernate consumindo muita memória em servidor remoto

-XX:MaxPermSize=64m

INFO: Server startup in 11919 ms
10/06/2012 15:09:31 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
GRAVE: The web application [/Financeiro] appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak.
10/06/2012 15:09:32 org.apache.catalina.startup.HostConfig checkResources
INFO: Undeploying context [/Financeiro]
10/06/2012 15:09:32 org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor Financeiro.xml from /Users/cleber/.netbeans/7.1.1/apache-tomcat-7.0.22.0_base/conf/Catalina/localhost

<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/Financeiro"
 reloadable="true">
     <Resource auth="Container"
     driverClassName="com.mysql.jdbc.Driver" 
     maxActive="100"
     maxIdle="30" 
     maxWait="10000" 
     name="jdbc/FinanceiroDB"
     password="adm" 
     type="javax.sql.DataSource" 
     url="jdbc:mysql://localhost:3306/financeiro?autoReconnect=true"
     username="root"/>    
 </Context>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

	<bean id="financeiroDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
		<property name="jndiName">
			<value>java:comp/env/jdbc/FinanceiroDB</value>
		</property>
	</bean> 	
</beans>

<?xml version="1.0" encoding="UTF-8"?>
<b:beans xmlns="http://www.springframework.org/schema/security"
    xmlns:b="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
                        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd">
	<http>

		<intercept-url pattern="/admin/**" access="ROLE_ADMINISTRADOR" />
		<intercept-url pattern="/restrito/**" access="ROLE_USUARIO" />
		<form-login login-page="/publico/login.jsf"
			always-use-default-target="true" default-target-url="/restrito/principal.jsf"
			authentication-failure-url="/publico/login.jsf?login_error=1" />
		<logout/>
		<remember-me />
	</http>

	<authentication-manager>
		<authentication-provider>
			<jdbc-user-service data-source-ref="financeiroDataSource"
				authorities-by-username-query="SELECT login, permissao FROM usuario WHERE login = ?"
				users-by-username-query="SELECT login, senha, ativo FROM usuario WHERE login = ?" />
		</authentication-provider>
	</authentication-manager>
</b:beans>

<!-- Spring Security -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			/WEB-INF/applicationContext.xml
			/WEB-INF/applicationContext-security.xml
		</param-value>
	</context-param>
     <filter>
		<filter-name>springSecurityFilterChain</filter-name>
		<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
	</filter>

	<filter-mapping>
		<filter-name>springSecurityFilterChain</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>   
        
        

    <resource-ref>
		<description>DataSource FinaceiroDB</description>
		<res-ref-name>jdbc/FinanceiroDB</res-ref-name>
		<res-type>javax.sql.DataSource</res-type>
		<res-auth>Container</res-auth>
	</resource-ref>