I have a vague feeling this might have been reported already,
but I can't find it, so here goes.

The SimpleQueueManager and RequestManager timer tasks fail
with the following exceptions

java.lang.NullPointerException
  at com.arsdigita.notification.SimpleQueueManager.run(SimpleQueueManager.java:59)
  at java.util.TimerThread.mainLoop(Timer.java:430)
  at java.util.TimerThread.run(Timer.java:380)
java.lang.NullPointerException
  at com.arsdigita.notification.RequestManager$1.excurse(RequestManager.java:96)
  at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:57)
  at com.arsdigita.notification.RequestManager.run(RequestManager.java:204)
  at java.util.TimerThread.mainLoop(Timer.java:430)
  at java.util.TimerThread.run(Timer.java:380)


In both case, the offending line is the second one in the following
snippet:

        Session session = SessionManager.getSession();
        session.getTransactionContext().beginTxn();

Instrumenting either class with a few log4j statements shows that
it is the "session" object that is null.  

I am at //core-platform/dev/...@37563 or thereabouts.