p.s. drop on the table is ok, the drag comes from other rich component.

In this test there is only one SDT and drop zone.

 <ui:composition xmlns="http://www.w3.org/1999/xhtml"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:rich="http://richfaces.org/rich"
 xmlns:a4j="https://ajax4jsf.dev.java.net/ajax"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:dim="http://dimetis.de/jsf">
 <rich:scrollableDataTable id="table" height="200px" width="220px"
 value="#{appBean.items}" var="item" sortMode="single" rows="25"
 rowClasses="taskRows" columnClasses="taskColumns">
 <rich:column width="104px">
 <f:facet name="header">
 <h:outputText value="Name"/>
 </f:facet>
 <a4j:outputPanel layout="block" style="border:1px solid black">
 <rich:dragSupport dragIndicator=":form:indicator" dragType="pidDrag"
 dragValue="#{item.name}" ondragstart="alert('start drag');">
 <rich:dndParam name="label" value="#{item.name}" />
 </rich:dragSupport>
 <h:outputText value="#{item.name}" />
 </a4j:outputPanel>
 </rich:column>
 <rich:column width="104px">
 <f:facet name="header">
 <h:outputText value="Value"/>
 </f:facet>
 <div style="margin-top:2px;display:block;">
 <h:outputText value="#{item.value}" />
 </div>
 </rich:column>
 <rich:componentControl id="taskcontrolid" for="tContextMenu" operation="show"/>
 </rich:scrollableDataTable>
</ui:composition>

D&D works again, after reRender the whole SDT.

FF 3.0.5 and IE 7 doesn't work. Opera is Ok.