You mean you're not using the Console?  You are using a Client on each of the target computers, and that client talks to the Ghostcast Server?  I admit, I'm still on GSS1.x so it might be different w/GSS 2.x.

I've rarely ever had a problem w/it dropping *all* clients, although occasionally I drop one or two here and there.  I think this falls into plain old debugging :)  I'm guessing in your environment, a multicast would be the same as a directed broadcast, but you can give that a try anyway.  You can also try multicasting to smaller (say two groups of 50) and see if you have any better luck.  Often, if it's just a few problematic systems, I find Ghosting to them gets me a trivial cable quality issue or crimping issue (if you make your own cables.)

As always (at least in my experience) find the driver and DOS combination that works best for your exact setup.  I've often gone through multiple different versions of a DOS driver (or the UNDI driver) and used both MSDOS and PCDOS (and DRDOS at times).  Since my hardware lifecycle is 4+ years, as much pain and hassle as it is to go through all these many many combinations, it's worth it over the long-run.  As much as it should *not* matter, I've often found some combination of DOS/Driver to be better than others.  I hate to write it off as "just one of those things" but alas, usually that's what it ends up as.

But for others on this forum, I think a quick description of your driver, version, switches when using ghost, error msg of dropped client(s), etc would be useful.  I'm sorry I don't have any specific suggestion.

Good luck,
PH