The JSF version of the task list tool has been ported to RSF. It has its own dedicated page on the RSF wiki here:
http://www2.caret.cam.ac.uk/rsfwiki/Wiki.jsp?page=SakaiRSFTaskList. In general the RSF version contained less code and was more straightforward to write than the JSF version, as well as being more efficient in terms of server state.
I dicussed this talk later in the week in my 2nd RSF session - the slides which discuss how the tool was derived from the JSF version are in the Confluence page for the session http://issues.sakaiproject.org/confluence/display/Conf2006Vancouver/ORM+with+Hibernate+in+Sakai+with+RSF]