On a NW6.5 SP5 server with Zenworks 6.5 we can't get multicast sessions to
work. The machines exit the PXE environment ("Zenworks shutting down") and
boot up normally.

When we go into imaging mode via Alt-Tab and then hit F9 to query for work
to do we get the message "No work to do".

We restarted the server, did a dsrepair, deleted and recreated the
Multicast Sessions in the server properties window, rebooted the switch,
checked the imagesafe data, cleared it (even though it was ok) and rebooted
the workstations - still they wouldn't pick up the mulitcast session.

Any idea what we could be missing?