seam 2.1.1gs seems to keep complaining that it cant find my @Destroy method on my action class

I cant see whats wrong with the component class defn - can anyone shed some light on whats going on here.

my comonent code looks like this. 

package org.domain.will.session;

import javax.persistence.EntityManager;

import org.domain.will.entity.member.Member;
import org.domain.will.session.security.PasswordManager;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Begin;
import org.jboss.seam.annotations.Destroy;
import org.jboss.seam.annotations.End;
import org.jboss.seam.annotations.Factory;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Role;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.web.RequestParameter;
import org.jboss.seam.faces.FacesMessages;
import org.jboss.seam.framework.EntityHome;
import org.jboss.seam.log.Log;

@Name("memberHome")
@Scope (ScopeType.CONVERSATION)
public class MemberHome extends EntityHome<Member>
{
     static final long serialVersionUID = 1;

    @RequestParameter 
    String memberId;

    @Logger
     private Log log;
     
    @In FacesMessages facesMessages;
    @In (create=true) PasswordManager passwordManager;
    
    private boolean changed;
    


    @Factory("newMember")
    public Member initNode() 
    {
         facesMessages.add ("new member created by factory");
         log.info("newMember factory create initiated");
         return getInstance();
    }
    

    
    @Override
    public Object getId() 
    { 
        if (memberId==null)
        {
            return super.getId();
        }
        else
        {
            return memberId;
        }
    }
    
    @Override 
    public void create() 
    {
        super.create();
         facesMessages.add ("new member created, conversation started");
    }

    @End 
    public String clear() 
    {
         clearInstance();
         facesMessages.add("end member management, cease conversation");
         return "completed";
   }

    /*
     * end current conversation 
     */
    @End 
    public String cancel() 
    { 
         facesMessages.add("cancel member management, cancel conversation");
         return "cancel";
    }

    public void changePassword()
    {
        if (passwordManager.verify()) 
        {
            this.persist();
           facesMessages.add("Password updated");
           changed = true;
        }
        else 
        {
          facesMessages.addToControl("verify", "Re-enter new password");
          revertUser();
        }
    }
    
    public boolean isChanged()
    {
       return changed;
    }
    
    private void revertUser()
    {
       //user = this.find();
    }
    
    @Destroy
    void onDestroy ()
    {
         log.info("destroy called for memberHome");
    }
      
}

and the error trace says

7:11:28,660 INFO  [MemberHome] newMember factory create initiated
17:11:28,832 WARN  [Component] Exception calling component @Destroy method: memberHome
java.lang.IllegalArgumentException: method not found: onDestroy for component: memberHome
     at org.jboss.seam.Component.callComponentMethod(Component.java:2229)
     at org.jboss.seam.Component.callDestroyMethod(Component.java:2142)
     at org.jboss.seam.Component.destroy(Component.java:1436)
     at org.jboss.seam.contexts.Contexts.destroy(Contexts.java:251)
     at org.jboss.seam.contexts.Contexts.flushAndDestroyContexts(Contexts.java:363)
     at org.jboss.seam.contexts.FacesLifecycle.endRequest(FacesLifecycle.java:129)
     at org.jboss.seam.jsf.SeamPhaseListener.afterRenderResponse(SeamPhaseListener.java:515)
     at org.jboss.seam.jsf.SeamPhaseListener.afterServletPhase(SeamPhaseListener.java:247)
     at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:194)
     at com.sun.faces.lifecycle.Phase.handleAfterPhase(Phase.java:175)
     at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:114)
     at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
     at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177)
     at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267)
     at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380)
     at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507)
     at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
     at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoSuchMethodException: org.domain.will.session.MemberHome_$$_javassist_1.onDestroy()
     at java.lang.Class.getMethod(Unknown Source)
     at org.jboss.seam.Component.callComponentMethod(Component.java:2208)
     ... 55 more