Depois de multiplos uploads ele nao renderiza o datagrid.
Estou usando Primefaces 3.0 RC2 + Richfaces 4.1
<rich:panel style="height:300px" id="pnImg">
<f:facet name="header">
<h:outputText value="#{arquivoBean.pastaAtual}" />
</f:facet>
<p:dataGrid value="#{arquivoBean.imagens}" var="img"
columns="3" rows="9" id="img" paginator="true" effect="true"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
rowsPerPageTemplate="9,12,15"
style="border:thin none #000000;background-color:#f1f1f1;"
border="0"
rendered="#{not empty arquivoBean.imagens}">
<p:column>
<h:panelGrid columns="1"
style="background:#f1f1f1;background-color:#f1f1f1;border:thin none #000000;"
cellpadding="0" cellspacing="0">
<img src="#{img.endereco}" height="100" width="100" />
<h:outputText value="#{img.nome}" />
</h:panelGrid>
</p:column>
</p:dataGrid>
<p:fileUpload fileUploadListener="#{arquivoBean.upload}"
auto="true" mode="advanced" update="messages,pnImg,img"
multiple="true">
</p:fileUpload>
<p:growl id="messages" showDetail="true" />
</rich:panel>