[Samba] cannot copy from win2k client to samba share

[Stuart Highlander]

good afternoon all,

i am running samba 3.0.7-2.FC1 on fedora core 1.

i have a strange problem.  when the win2k clients at one of my sites try to
copy a file to a samba share on a different subnet, i get the following
message:

Cannot copy filename:  the specified network name is no longer available.

i can copy the files to shares on a samba share on the same subnet, and i
can copy the files from thte samba share on the different subnet to the
win2k clients, but i cannot copy files from the clients to the samba share
on the different subnet.

no firewalls, and the permissions do not appear to be a factor.

any ideas?

stuart