Imaging Sessions Time Out - Mulitcast not working

I am running OES 6.5 SP5 and Zen 6.5 SP4 on my imaging server. When I try
to do a direct session using the Zenworks bootdisk, the process is so slow
that the session times out. When I try to set up a session in C1 and use
the IP and/or MAC address, the server never finds the machine. I have tried
creating the sessions on the server using the Zenworks console, it also
does not work.

From the server, using the Zenworks console, I cannot read long file names,
but in all other mediums (other servers, C1, Explorer) I can.

I think we have a replication problem between the cluster servers and the
replica on the Imaging server. Can I be right, or should I be looking in
other places for the solution to this mess?