Symantec Ghost 7.5 Not Connecting

Hi all,

Having major issues with a Ghost server at work am looking at clearing a few things up as possible reasons why.

What keeps happening is that sometimes, totally random, a client PC with refuse to connect to a session on the server, but a PC that is sat next to that one will work fine on the same session and is in the same subnet and only 1 digit different in the IP address. We use Terminal Services to access the server and set sessions up and the network router that it is connected to blocks mulitcast.
We also have a temporary Ghost server setup on a normal PC, not in a comms room or behind the same router that blocks multicast and don't need to use Terminal Services. This one works great, we can have multiple sessions setup and loads of PC's connecting with it without an issue.

I suspect its something to do with the multicasting being blocked on the proper Ghost server but am not really sure. I also think that running multiple sessions over 2 different Terminal Service sessions isn't helping things, but again am not sure.

Any experts on Ghost that could offer any suggestions??

TIA

Gizmo