Problema ao mostrar parametros no SQL do hiberante com log4j

Olá,

Estou usando o blank project do vraptor que já vem com o log4j.xml (na raiz do src), alterei ele para fazer o log do sql hibernate com o trace dos parametros. Mas não funciona e fica dando sempre este erro na abertura:

log4j:WARN No appenders could be found for logger (org.jboss.logging).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

	<appender name="stdout" class="org.apache.log4j.ConsoleAppender">
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern" value="%d{HH:mm:ss,SSS} %5p [%-20c{1}] %m%n" />
		</layout>
	</appender>

	<category name="br.com.caelum.vraptor">
		<priority value="INFO" />
		<appender-ref ref="stdout" />
	</category>

	<category name="org.springframework">
		<priority value="INFO" />
		<appender-ref ref="stdout" />
	</category>

	<category name="org.hibernate.SQL">
		<priority value="TRACE" />
	</category>

	<category name="org.hibernate.type">
		<priority value="TRACE" />
	</category>

</log4j:configuration>

Os logs saem assim:

Informações: Server startup in 4202 ms
Hibernate: 
    select
        this_.idUsuario as idUsuario0_0_,
        this_.ds_email as ds2_0_0_,
        this_.nm_usuario as nm3_0_0_,
        this_.ds_senha as ds4_0_0_,
        this_.sn_liberado as sn5_0_0_ 
    from
        Usuario this_ 
    where
        this_.ds_email=? 
        and this_.ds_senha=?
Hibernate: 
    select
        this_.idGrupoUsuario as idGrupoU1_2_0_,
        this_.idGrupo as idGrupo2_0_,
        this_.idUsuario as idUsuario2_0_ 
    from
        GRUPO_USUARIO this_ 
    where
        this_.idUsuario=?

Alguem sabe o que posso estar fazendo de errado?