StackOverflowError , Basic JSF Application

Hi,
i am new to JSF and running a basic JSF application but facing an exception, kindly see my code and sugguest me to ridof it, thanks :)
import com.infotech.backingbean.LoginBackingBean;
* AbstractManagedBean *
public abstract class AbstractManagedBean {
     protected LoginBackingBean backingBean;
     public String execute(LoginBackingBean backingBean) {     
          return executeRequest(null, null, null, backingBean);
     public abstract String executeRequest(HttpServletRequest request,
               HttpServletResponse response, HttpSession session, LoginBackingBean backingBean);
     public LoginBackingBean getBackingBean() {
          return backingBean;
     public abstract void setBackingBean(LoginBackingBean backingBean);
* LoginManageBean *
public class LoginManageBean extends AbstractManagedBean {
     public LoginManageBean() {
          setBackingBean(new LoginBackingBean());
     @Override
     public String executeRequest(HttpServletRequest request, HttpServletResponse response,
               HttpSession session, LoginBackingBean backingBean) {
          LoginBackingBean loginBackingBean = (LoginBackingBean)backingBean;
          Boolean flag = (loginBackingBean.getUserName().equals("kb") && loginBackingBean.getUserPassword().equals("kb"));
          String page = flag ? "loginSuccess" : "loginFailed";
          System.out.println(flag);
          System.out.println(page);
          return page;
     @Override
     public void setBackingBean(LoginBackingBean backingBean) {
          this.backingBean = backingBean;          
* JSP page *
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@ taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<html>
<head>
<title>A Simple JavaServer Faces Application</title>
</head>     
          <body>
          <f:view>          
          <h:form>
          <h3>Login</h3>
          <table>
          <tr>
          <td>Name:</td>
          <td><h:inputText value="#{loginManageBean.backingBean.userName}"/></td>
          </tr>          
          <tr>
          <td>Password:</td>
          <td><h:inputSecret value="#{loginManageBean.backingBean.userPassword}"/></td>
          </tr>          
          </table>
          <p>
          <h:commandButton value="Login" action="#{loginManageBean.execute}" />
          </p>
          </h:form>
          </f:view>
          </body>
</html>
* faces-config.xml *
<faces-config>
     <navigation-rule>
     <from-view-id>/main.jsp</from-view-id>
     <navigation-case>
     <from-outcome>loginSuccess</from-outcome>
     <to-view-id>/welcome.jsp</to-view-id>
     </navigation-case>
     <navigation-case>
     <from-outcome>loginFailed</from-outcome>
     <to-view-id>/main.jsp</to-view-id>
     </navigation-case>
     </navigation-rule>
     <managed-bean>
          <managed-bean-name>loginManageBean</managed-bean-name>
          <managed-bean-class>com.infotech.managedbean.LoginManageBean</managed-bean-class>
          <managed-bean-scope>request</managed-bean-scope>
     </managed-bean>
</faces-config>
* web.xml *
<web-app version="2.5"
     xmlns="http://java.sun.com/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.jsf</param-value>
</context-param>
<context-param>
     <param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>/WEB-INF/faces-config.xml</param-value>
</context-param>
     <listener>
          <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
     </listener>
<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>*.jsf</url-pattern>
</servlet-mapping>
</web-app>
* Exception StackOverflowError *
Exception in thread "http-8080-exec-1" java.lang.StackOverflowError
     at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:229)
     at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:575)
     at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:229)
     at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:575)
     at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:229)
     at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:575)
     at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:229)
     at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:575)
     at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:229)
     at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:575)
     at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:229)
     at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:575)
     at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:229)
     at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:575)
     at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:229)

yes, i fixed it by commeted
<!--
<context-param>
<param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>/WEB-INF/faces-config.xml</param-value>
</context-param>
-->

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    Few tips how to solve described problem:
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    b) use java 1.5 to let castor generate lists
    c) use mapping of xml namespaces to java packages to have only 1 implementation of each xsd
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    4. Right click those facades and choose 'Create DataControl' in jdev
    5. Now you may drag and drop you DataControls and use them in your JSF (or UIX) application
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    Leszek

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