Conflito richfaces com filtro

Olá pessoal, a pagina carregada fica somente com as frases, o estilo do richfaces nao aparece e nao consigo logar. Isso comecou a acontecer depois q coloquei um filtro de login. Ai quando acontece, se tiro o filtro volta tudo ao normal.

meu web.xml

[code]

<?xml version="1.0" encoding="UTF-8"?>
<display-name>a4jEchoText</display-name>
<context-param>
    <param-name>org.richfaces.SKIN</param-name>
    <param-value>blueSky</param-value>
</context-param>
<context-param>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>server</param-value>
</context-param>
<filter> 
    <display-name>RichFaces Filter</display-name> 
    <filter-name>richfaces</filter-name> 
    <filter-class>org.ajax4jsf.Filter</filter-class> 
</filter> 
<filter-mapping> 
    <filter-name>richfaces</filter-name> 
    <servlet-name>Faces Servlet</servlet-name>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>INCLUDE</dispatcher>
</filter-mapping>
<listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>      

<filter>
    <filter-name>MainFilter</filter-name>
    <filter-class>controller.MainFilter</filter-class>
</filter>

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


<context-param>
    <param-name>com.sun.faces.verifyObjects</param-name>
    <param-value>false</param-value>
</context-param>
<context-param>
    <param-name>com.sun.faces.validateXml</param-name>
    <param-value>true</param-value>
</context-param>
<context-param>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>client</param-value>
</context-param>
<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<session-config>
    <session-timeout>
        30
    </session-timeout>
</session-config>
<welcome-file-list>
    <welcome-file>faces/index.jsp</welcome-file>
</welcome-file-list>

[/code]

filtro problematico

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package controller;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import vo.UsuarioVO;

/**
 *
 * @author joaosavio
 */

//Filtro de autenticação
public class MainFilter implements Filter {  
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {  
        HttpServletRequest hreq = (HttpServletRequest)req;  
        HttpServletResponse hres = (HttpServletResponse)res;  
        UsuarioVO usuarioVO = new UsuarioVO();
        usuarioVO = (UsuarioVO) hreq.getSession().getAttribute("usuarioVO");
          
        if(usuarioVO != null) { 
            chain.doFilter(req,res); 
        }
        else {  
            RequestDispatcher rd = req.getRequestDispatcher("/faces/index.jsp");  
            rd.forward(hreq,hres); 
        }  

    }

    public void init(FilterConfig arg0) {
    }

    public void destroy() {
        
    }
}

Tem alguma coisa que esqueci de colocar ou está errado?

percebo q se retiro o filtro e coloco de novo aí funciona tudo

toda vez q a aplicacao é executada sem q se tire o filtro, rode a aplicacao e depois rode de novo com o filtro, dá problema

up

Estranho, uso um filter parecido aqui.

Já tentou colocar o mapeamento dele antes dos filters do richfaces?

ja tentei

nao mudou nada

ninguem mais teve esse problema?