#4: Winbind, because somewhere it was recommended to have installed.

#5:

1.  "smb://192.168.x.xxx/sharename" in Nautilus (Ctrl-L) gives:  the shared directory on this machine only, after entering my share password.

2.  "smb://<name of thus PC>/sharename"gives:  the shared directory on this machine only, after entering my share password.

3.  "smb://<name of a remote PC>/sharename" gives: "Could not display "smb://wings/sharename/". Error: Failed to mount Windows share. Please select another viewer and try again."

#6:

1. Output of   /var/log/samba/log.smbd:

 "[2009/10/18 12:44:36,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/18 12:44:37,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/18 12:44:37,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/18 12:52:59,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/18 12:52:59,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/18 12:52:59,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/18 15:41:10,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/18 15:41:11,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/18 15:41:11,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/18 15:41:12,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/18 15:41:12,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/18 16:09:35,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/18 16:09:37,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/18 16:09:37,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/18 16:09:39,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/18 16:09:39,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/19 09:16:07,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/19 09:16:08,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/19 09:16:08,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/19 16:42:42,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/19 16:42:43,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/19 16:42:43,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/19 16:42:45,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/19 16:42:45,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 08:48:08,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/20 08:48:09,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 08:48:09,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 08:48:10,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 08:48:10,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 09:01:28,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/20 09:01:29,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 09:01:29,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 09:01:31,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 09:01:31,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 10:22:47,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/20 10:22:47,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 10:22:47,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 10:22:47,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 10:22:47,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 13:01:01,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/20 13:01:02,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 13:01:02,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 13:01:04,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 13:01:04,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/20 15:32:48,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/20 15:32:49,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 15:32:49,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 21:09:11,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/20 21:09:12,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/20 21:09:12,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/21 10:54:03,  0] smbd/server.c:1068(main)
  smbd version 3.4.0 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2009/10/21 10:54:04,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/21 10:54:04,  0] printing/print_cups.c:103(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2009/10/21 10:54:05,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use
[2009/10/21 10:54:05,  0] smbd/server.c:456(smbd_open_one_socket)
  smbd_open_once_socket: open_socket_in: Address already in use"


2.  /var/log/log.nmd : I do not have that file in /var/log/.  I have only  "lastlog. lpr.log and lpr.log.1 for "L" files.

3. testparm:

"Load smb config files from /etc/samba/smb.conf
Processing section "[ShareName]"
Processing section "[printers]"
Processing section "[print$]"
Loaded services file OK.
Server role: ROLE_STANDALONE
Press enter to see a dump of your service definitions

[global]
	workgroup = XXXXXXX
	netbios name = DESKTOP
	server string = %h server (Samba, Ubuntu)
	map to guest = Bad User
	obey pam restrictions = Yes
	pam password change = Yes
	passwd program = /usr/bin/passwd %u
	passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
	unix password sync = Yes
	syslog = 0
	log file = /var/log/samba/log.%m
	max log size = 1000
	name resolve order = bcast host lmhosts wins
	printcap name = cups
	dns proxy = No
	panic action = /usr/share/samba/panic-action %d
	cups options = raw
	use client driver = Yes

[ShareName]
	path = /home/<username>/<shared folder name>
	read only = No
	cups options = 
	use client driver = No

[printers]
	comment = All Printers
	path = /var/spool/samba
	create mask = 0700
	guest ok = Yes
	printable = Yes
	cups options = 
	use client driver = No
	browseable = No
	browsable = No

[print$]
	comment = Printer Drivers
	path = /var/lib/samba/printers
	cups options = 
	use client driver = No"


 Also, for all, here's the thread from the Ubuntu Message board:http://ubuntuforums.org/showthread.php?t=1296111