I have my pom.xml
Code:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.reglamb.projvehimerc</groupId>
  <artifactId>projvehimerc</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <packaging>war</packaging>
  
<properties>
        <spring.version>3.0.5.RELEASE</spring.version>
        <hibernate.version>3.5.6-Final</hibernate.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
<repositories>
        <repository>
            <id>JBoss Repo</id>
            <url>http://repository.jboss.com/maven2</url>
            <name>JBoss Repo</name>
        </repository>
        <repository>
            <id>ibiblio mirror</id>
            <url>http://mirrors.ibiblio.org/pub/mirrors/maven2/</url>
        </repository>
        <repository>
            <id>jboss-public-repository-group</id>
            <name>JBoss Public Maven Repository Group</name>
            <url>https://repository.jboss.org/nexus/content/groups/public/</url>
            <layout>default</layout>
            <releases>
                <enabled>true</enabled>
                <updatePolicy>never</updatePolicy>
            </releases>
            <snapshots> 
                <enabled>true</enabled>
                <updatePolicy>never</updatePolicy>
            </snapshots>
        </repository>
    </repositories>

<build>
	<plugins>
		<!-- Error de maven, maven always take the 1.3 version -->
	    <plugin>  
	    <groupId>org.apache.maven.plugins</groupId>  
	    <artifactId>maven-compiler-plugin</artifactId>
	    <version>2.1</version> 
	    <configuration>  
	    <source>1.6</source>  
	    <target>1.6</target>
	    </configuration>         
		</plugin>
			<plugin>
			<groupId>org.codehaus.mojo</groupId>
			<artifactId>jboss-maven-plugin</artifactId>
			<version>1.5.0</version>
			</plugin>         
</plugins>
</build>

<dependencies>
<!-- Spring dependencies -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
        
</dependency>

<!-- Spring MVC -->
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-webmvc</artifactId>
	<version>${spring.version}</version>
</dependency>
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-web</artifactId>
	<version>${spring.version}</version>
</dependency>

<dependency>
     <groupId>jstl</groupId>
     <artifactId>jstl</artifactId>
     <version>1.2</version>
</dependency>


<!-- Hibernate dependencies -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>${hibernate.version}</version>
        <exclusions>
                <exclusion>
                    <groupId>cglib</groupId>
                    <artifactId>cglib</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>net.sf.ehcache</groupId>
                    <artifactId>ehcache</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>asm</groupId>
                    <artifactId>asm</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>asm</groupId>
                    <artifactId>asm-attrs</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.transaction</groupId>
                    <artifactId>jta</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>xml-apis</groupId>
                    <artifactId>xml-apis</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-api</artifactId>
                </exclusion>
            </exclusions>
  	</dependency>
  	<dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>cglib</groupId>
                    <artifactId>cglib</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>dom4j</groupId>
                    <artifactId>dom4j</artifactId>
                </exclusion>   
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-api</artifactId>
                </exclusion>   
            </exclusions>
        </dependency>
  	
  <!-- Hibernate annotations.chache -->  	
	  <dependency>
	      <groupId>org.hibernate</groupId>
	      <artifactId>hibernate-annotations</artifactId>
	      <version>${hibernate.version}</version>
	      
	   </dependency> 
<!-- Hibernate annotation @Entity -->
	  <dependency>
	      <groupId>org.hibernate.javax.persistence</groupId>
	      <artifactId>hibernate-jpa-2.0-api</artifactId>
	      <version>1.0.0.Final</version>
	      
	  </dependency>
  
 <!-- @Dependecy, Spring Transacctions(Spring tx) -->
   <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
            
  </dependency>
  
  <!-- Hibernate Template -->
    <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-orm</artifactId>
       <version>${spring.version}</version>
   </dependency>
   <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-context</artifactId>
       <version>${spring.version}</version>
   </dependency>
   <!-- Test Dependency -->
   <dependency>
        	<groupId>junit</groupId>
        	<artifactId>junit</artifactId>
        	<version>4.4</version>
        	<scope>test</scope>
        </dependency>
    <!-- Propertie than ok! for test -->
    <dependency>
	    <groupId>org.springframework</groupId>
	    <artifactId>spring-test</artifactId>
	    <version>2.5</version>
	</dependency>
	<dependency>
	    <groupId>postgresql</groupId>
	    <artifactId>postgresql</artifactId>
	    <version>9.0-801.jdbc4</version>
	</dependency>
		<!-- Another -->
		<dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib-nodep</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>javax.transaction</groupId>
            <artifactId>jta</artifactId>
            <version>1.1</version>
        </dependency>

</dependencies>
  
</project>
Even i exclude the slf4j-api in hibernate-core, and hibernate-entitymanager, I take the error:
Code:
java.lang.LinkageError: loader constraint violation: when resolving method "org.slf4j.impl.StaticLoggerBinder.getLoggerFactory()Lorg/slf4j/ILoggerFactory;
I check the maven repositories and I found that the slf4-api-1.5.8.jar don't be exclude, I view in the dependecy hierarchy and this don't have dependency hierarchy.
I can't exclude slf4j-api-1.5.8.jar !!!, why?.