Session timeout NPE

In our installation of sakai 2.1.2, if a session times out while using 
certain tools, the user is displayed a stack trace instead of the login 
tool.  This exists in tools implemented using JSF (or so it appears), 
such as Gradebook, Syllabus, Roster, Presentation and our Goal 
Management Tool.  The problem doesn't exist in Assignments or Announcements.

Extremely brief trace:
...
java.lang.NullPointerException
at org.sakaiproject.tool.login.LoginTool.doPost(LoginTool.java:353)
...

Can anybody verify that this is an issue, or have any idea what could be 
causing this?  I couldn't find any bug report and assumed this would 
have been noticed pretty quickly...

Thanks,

Jim

--
James M Pease - Software Developer - The Living SchoolBook
030 Huntington Hall - Syracuse University - Syracuse, NY 13244
315-443-3450

----------------------
This automatic notification message was sent by Sakai Collab 
(http://collab.sakaiproject.org/portal) from the DG: Development site.
You can modify how you receive notifications at My Workspace > Preferences.