changed to new version jboss 6.1 from jboss 4.2.2 it is giving exception after deploying my project

i am getting the following exception ....

Deployment "vfs:///D:/server/jboss-6.1.0.Final/server/default/deploy/MozartCCNewUI.war" is in error due to the following reason(s): org.xml.sax.SAXException: The content of element type "web-app" must match "(icon?,display-name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,taglib*,resource-env-ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-ref*)". @ vfs:///D:/server/jboss-6.1.0.Final/server/default/deploy/MozartCCNewUI.war/WEB-INF/web.xml[152,11]

this is my web.xml file.....

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

<!--
To use non XDoclet filters, create a filters.xml file that
contains the additional filters (eg Sitemesh) and place it in your
project's merge dir. Don't include filter-mappings in this file,
include them in a file called filter-mappings.xml and put that in
the same directory.
-->

<distributable />

<filter>
<filter-name>LoginFilter</filter-name>
<filter-class>
com.zyom.security.LoginMonitorFilter
</filter-class>
</filter>

<filter-mapping>
<filter-name>LoginFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>LoginFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>

<!--
To use non XDoclet filter-mappings, create a filter-mappings.xml file that
contains the additional filter-mappings and place it in your
project's merge dir.
-->

<!--
To use non XDoclet listeners, create a listeners.xml file that
contains the additional listeners and place it in your
project's merge dir.
-->

<servlet>
<servlet-name>action</servlet-name>
<servlet-class>
org.apache.struts.action.ActionServlet
</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<servlet>
<servlet-name>CewolfServlet</servlet-name>
<servlet-class>de.laures.cewolf.CewolfRenderer</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>CewolfServlet</servlet-name>
<url-pattern>/cewolf/*</url-pattern>
</servlet-mapping>

<session-config>
<session-timeout>30</session-timeout>
</session-config>

<listener>
<listener-class>com.zyom.reuse.util.SessionListener</listener-class>
</listener>

<!--
To specify mime mappings, create a file named mime-mappings.xml, put it in your project's mergedir.
Organize mime-mappings.xml following this DTD slice:

<!ELEMENT mime-mapping (extension, mime-type)>
-->

<!-- The Welcome File List -->
<welcome-file-list>
<welcome-file>/pages/MozartCostLoginAdmin.jsp</welcome-file>
</welcome-file-list>

<!--
To specify error pages, create a file named error-pages.xml, put it in your project's mergedir.
Organize error-pages.xml following this DTD slice:

<!ELEMENT error-page ((error-code | exception-type), location)>
-->

<taglib>
<taglib-uri>/tags/struts-bean</taglib-uri>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/struts-html</taglib-uri>
<taglib-location>/WEB-INF/struts-html.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/struts-logic</taglib-uri>
<taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/struts-nested</taglib-uri>
<taglib-location>/WEB-INF/struts-nested.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/struts-tiles</taglib-uri>
<taglib-location>/WEB-INF/struts-tiles.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/pagetaglib</taglib-uri>
<taglib-location>/WEB-INF/pagetaglib.tld</taglib-location>
</taglib>

<!--
To set up security settings for your web app, create a file named web-security.xml, put it in your project's mergedir.
Organize web-security.xml following this DTD slice:

<!ELEMENT security-constraint (display-name?, web-resource-collection+, auth-constraint?, user-data-constraint?)>
<!ELEMENT web-resource-collection (web-resource-name, description?, url-pattern*, http-method*)>
<!ELEMENT web-resource-name (#PCDATA)>
<!ELEMENT url-pattern (#PCDATA)>
<!ELEMENT http-method (#PCDATA)>
<!ELEMENT user-data-constraint (description?, transport-guarantee)>
<!ELEMENT transport-guarantee (#PCDATA)>

<!ELEMENT login-config (auth-method?, realm-name?, form-login-config?)>
<!ELEMENT auth-method (#PCDATA)>
<!ELEMENT realm-name (#PCDATA)>
<!ELEMENT form-login-config (form-login-page, form-error-page)>
<!ELEMENT form-login-page (#PCDATA)>
<!ELEMENT form-error-page (#PCDATA)>
-->

</web-app>