I took a chance to install SP2 over SP1 and attempt to run a demo that was
working successfully before. However, the demo failed upon SP2 installation.

I took a look at the trace and notice that multiple security headers are not
propagated properly. Seems that the ActorNextURI is not propagated properly
to the next node and therefore a SecurityRefenceNotFound exception is
thrown....hmmm...I dont know.

I have to reinstall back SP1 cos I need to run a few demos for the next
couple of days. Will take a relook at it again once my appetite for risk
runs high again. :) Will further update.

On another note, what is WSE's (SP1) implementation path for handling
security headers with NoActor and another with ActorNextURI ? Seems to throw
an exception at the SecurityInputFilter.ProcessMessage. However, if I
specify an security header with an explicit actor that equals the node and
another with ActorNextURI, the node processes both headers --- which is the
correct behaviour.

Any advice.