lost samba browse list on upgrade to fc4

[sean]

I'm running a small workgroup with ten windows machines 
where a linux box is the samba server:

Oct 18 13:32:56 Server nmbd[31741]:   Samba name server 
SERVER is now a local master browser for workgroup FIRM
on subnet 10.10.10.2

  I just upgraded from fc1 to fc4. This setup worked fine in 
fc1. But now, the windows machines can browse shares on all 
the other windows machines, but *not* on the server itself.

net view does not show the Server. But, new view server does 
show the shares on the server!

Also, net use x: \\server\share gives a network path not 
found message.

testparm works.

smb.conf:

[global]
workgroup = FIRM
netbios name = Server
server string = Linux Server

load printers = yes
browseable = yes
printing = cups
printcap name = cups

security = user
map to guest = Bad Password
guest ok = no
encrypt passwords = yes
passdb backend = tdbsam

interfaces = 10.10.10.2/16 127.0.0.1
bind interfaces only = yes

local master = yes
os level = 99
domain master = no
preferred master = yes

time server = yes

wins support = no


[nhi]
   browseable = yes
   path=/home/firm
   public = yes
   writable = yes
   create mask = 777
   directory mask = 777

[isw]
   browseable = yes
   path = /home/firm/isw.dat
   public = yes
   writable = yes
   create mask=777
   directory mask=777

[backup]
   browseable=yes
   path=/home/firm/backup
   public=yes
   writable=yes
   create mask=777
   directory mask=777


sean