[SOLVED] RPi invisible on network / nmbd issue

[mrpi]

Software
XBian version: 1.0RC3
XBMC version: 13.2 Git:20140901-867305b
Overclock settings: Xbian profile (840Mhz)

Hardware
Power supply rating: 5V 3A
RPi model (model A/B 256mb/512mb): B+ 512mb
SD card size and make/type: Kingston 8GB microSD
Network (wireless or LAN): LAN
Connected devices (TV, USB, network storage, etc.): RPi using 1 usb connected to 1 externally powered usb hub (7ports) connected to: 1 Seagate USB 2.0 Expansion 2TB, 1 Samsung SATA 320GB drive in USB 3.0 enclosure, 1 Logitech USB wireless combo (kb + mouse)

Config files:
/etc/hostname:

Code:

atum

/etc/hosts:

Code:

127.0.0.1    localhost
127.0.1.1    atum
# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
fe00::0         ip6-localnet
ff00::0         ip6-mcastprefix

/etc/host.conf:

Code:

multi on

/etc/samba/shares.conf:

Code:

[xbian]
    path = /home/xbian
    guest ok = yes
    read only = no
    force user = xbian
    browseable = yes

[xbian-xbmc]
    path = /home/xbian/.xbmc
    guest ok = yes
    read only = no
    force user = xbian
    browseable = yes

[system-logs]
    path = /var/log
    guest ok = yes
    read only = yes
    force user = root
    browseable = yes

/etc/smb.conf

Code:

# DO NOT EDIT THIS FILE. FOR ADDITIONAL SETTINGS OR SHARES DEFINITION
# USE 'net' (man net).

[global]
server string = atum
guest ok = yes
security = user
socket options = TCP_NODELAY SO_RCVBUF=65535 SO_SNDBUF=65535
registry shares = yes
syslog = 0
map to guest = bad user
workgroup = WORKGROUP
bind interfaces only = No
encrypt passwords = true
log level = 0
# smb ports = 445
unix extensions = No
wide links = yes

include = /etc/samba/user.conf
# include = /etc/samba/shares.conf

/etc/samba/user.conf

Code:

[Expansion]
   comment = Expansion
   path = /media/Expansion
   valid users = alex
   force create mode = 755
   force directory mode = 755
   writeable = yes
   browseable = no

[Samsung]
   comment = Samsung
   path = /media/Samsung
   valid users = alex
   force create mode = 755
   force directory mode = 755
   writeable = yes
   browseable = no

[Movies]
   comment = Movies
   path = /media/Expansion/MOVIES
   force create mode = 755
   force directory mode = 755
   writeable = yes

[TV Shows]
   comment = TV Shows
   path = /media/Expansion/TV SHOWS
   force create mode = 755
   force directory mode = 755
   writeable = yes

[Shared]
   comment = Shared
   path = /media/Expansion/Shared
   force create mode = 755
   force directory mode = 755
   writeable = yes

Problem description:
The RPi isn't visible on the network. I cannot browse its shares from Windows 8.1, Windows 7, mobile devices etc.
Typing the IP into windows explorer as \\192.168.0.3\ allows me to see the 3 shares: Movies, TV Shows and Shared.
\\192.168.0.3\Expansion and \\192.168.0.3\Samsung are hidden, as expected, but can be accessed.
Trying to access via \\hostname\ doesn't work.
Samba in pure Raspbian worked right out of the box. I was able to configure my shares just the way I want them.
I don't really know how to use this 'net' command to configure these, so I tried editing the user.conf file.
Also, I wanted to remove access to the initial shares, that's why I commented out shares.conf.
I added the samba user by using 'sudo smbpasswd -a alex'.
Basically, I need to be able to browse to \\atum\ from my windows laptop.

Could my problem be related to how Xbian handles SMB shares (the net command I'm unfamiliar with) ?
Any ideas?

Thanks in advance for any help,
Alex