When I use a4j:commandButton or a4j:commandLink the action method is executed only once on the seam component, no matter how many clicks I demand, and the reRenderable UI components do not suffer any reRender.

<a4j:outputPanel ... >
 ...
 <tr>
 <td>
 <a4j:commandLink id="doIt" 
      value="click here" reRender="someTxt"                                           
      action="#{myComponent.doIt}">
 </a4j:commandLink>  
 </td>
 <td>
 <h:outputLabel id="someTxt" 
    value="#{myComponent.data == null ? 'null' : 
                  myComponent.data.id}" />
 </td>
 </tr>
 ...
</a4j:outputPanel ... >

Other ajax interactions, like

  <h:selectOneMenu ...>
    <a4j:support ajaxSingle="true" event="onchange"
        reRender="someOtherTxt"
        actionListener="#{myComponent.doThat}"
  </h:selectOneMenu>

work fine.

I´m using seam 1.2.1, jboss 4.0.5, myfaces 1.1.4, facelets  and richfaces 3.1.2.

What am I missing ?