Hi *,
I use facelets+RF 3.1.2GA and have the following code:
 <h:form>
 <h:selectBooleanCheckbox valueChangeListener="#{testBean.doSelect}">
 <a4j:support event="onclick" ajaxSingle="true"
 limitToList="true" reRender="myId" />
 </h:selectBooleanCheckbox>
 <h:outputText value="#{testBean.selected}" id="myId"></h:outputText>
 <h:outputLabel value="#{testBean.label}" rendered="#{testBean.rendered}"></h:outputLabel>
 </h:form>
When I click the checkbox, method isRendered() in testBean is called, and even twice: during APPLY_REQUEST_VALUES and RENDER_RESPONSE phase. 
The question is: WHY? 
This code snippet is simplified. In reality i have tausends of components on the template, most of them have "rendered" attribute. The JSTL-code inside of this attribute is always evaluated (during AJAX-Requests), regardless of "reRender" attribute. This makes the AJAX-Requests very slow: even if I need to rerender a single component. 
How can I solve the problem? 
Tanks for any help!