[Samba] samba and mac clients

[John Stile]

On my network, when a mac client tries to access a windows share, they
are presented with a dialog box, prompting them for the share to connect
and then the authentication credentials.
 
However, when a mac client tires to connect to a samba share, it
immediately receive a dialog box with the error: "Could not connect to
the sever because the name or password is not correct.".  

Does anyone know which smb.conf settings effect this behavior?

On the samba logs, I don't see any messages, so the mac is not even
trying to authenticate. From server: Mac_client=192.168.60.208; tcpdump
-i eth0 -n "host $Mac_client"
  13:35:25.844578 IP 192.168.60.208.49803 > 192.168.60.48.137: NBT UDP PACKET(137): QUERY; REQUEST; UNICAST
  13:35:25.844761 IP 192.168.60.48.137 > 192.168.60.208.49803: NBT UDP PACKET(137): QUERY; POSITIVE; RESPONSE; UNICAST
  13:35:25.845579 IP 192.168.60.208.49677 > 192.168.60.48.139: S 4284939447:4284939447(0) win 65535 <mss 1460,nop,wscale 0,nop,nop,timestamp 2653034266 0>
  13:35:25.846105 IP 192.168.60.208.49678 > 192.168.60.48.139: S 3344627758:3344627758(0) win 65535 <mss 1460,nop,wscale 0,nop,nop,timestamp 2653034266 0>

Command issued from the mac: mount_smbfs -Ujohns //smbdev1/htdocs tmp

Samba Server: samba version:3.0.14a-3, Distribution debian 3.1, Linux kernel:2.6.8-2-386