Getting same issue, SME 5.1.2, Windows 2K (also XP)
[2002/02/05 12:24:36, 0] lib/util_sock.c:matchname(955)
host name/name mismatch: pc-00129 != pc-00129.homeoffice.wintermute-ltd.com
[2002/02/05 12:24:36, 0] lib/util_sock.c:get_socket_name(1008)
Matchname failed on pc-00129 192.168.1.129
[2002/02/05 12:26:27, 0] smbd/service.c:make_connection(238)
babbage (192.168.1.129) couldn't find service ::{2227a280-3aea-1069-a2de-08002b30309d}
[2002/02/05 12:28:52, 0] smbd/server.c:sig_hup(384)
Got SIGHUP
We are evaluating SME as an W2K replacement, so elements of both environments exist. the machine in question is called "babbage", however, we have now disabled the W2K DHCP Server and are using SME5 instead.
Thing is, the user at this workstation can happily use i-bays.