Exception C3P0, não consigo resolver!

Estou usando C3P0 com Hibernate e sempre que o C3P0, vai finalizar uma conexão do Pool,
ele lança a seguinte exception:

java.lang.Exception: DEBUG -- CLOSE BY CLIENT STACK TRACE
	at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:491)
	at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:191)
	at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:470)
	at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:964)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
java.lang.Exception: DEBUG -- CLOSE BY CLIENT STACK TRACE

Meu hibernate.cfg.xml está assim:

<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
  <property name="c3p0.timeout">5000</property>
  <property name="show_sql">false</property>
  <property name="hibernate.query.factory_class">org.hibernate.hql.classic.ClassicQueryTranslatorFactory</property>
  <property name="current_session_context_class">thread</property>

Meu c3p0.properties está assim:

c3p0.initialPoolSize=1 

   c3p0.minPoolSize=1

   c3p0.maxPoolSize=5

   c3p0.maxIdleTime=180  

   c3p0.maxStatements=0  

   c3p0.maxStatementsPerConnection=10  

   c3p0.acquireIncrement=1  

   c3p0.idleConnectionTestPeriod=60  
 
   c3p0.checkoutTimeout=5000  
     
   c3p0.acquireRetryDelay=1000  

   c3p0.acquireRetryAttempts=1

   c3p0.breakAfterAcquireFailure=false  
 
   c3p0.maxIdleTimeExcessConnections=30 
 
   c3p0.numHelperThreads=3  
  
   c3p0.debugUnreturnedConnectionStackTraces=false 
 
   c3p0.unreturnedConnectionTimeout=0

Desde já agradeço galera.

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