Samba User Access vs. Guest Access

[begunfx]

Hey All,
I'm having some issues with samba on my pogoplug (brick/v01). It's setup and working, but only for guest access. When I try to set it up for user access only, I get read only, and can't write. With guest access I can read/write. Any Ideas? In my smb.conf file included below I have the security set to "share" but when I was trying to get user access working I had it set to "user", also I have guest account set to "root", which I'm not a fan of.

$this->bbcode_second_pass_code('', '
#======================= Global Settings =====================================
[global]

workgroup = HOMESTUFF
server string = Pogoplug Samba2 Server
hosts allow = 192.168.1. 127.
printcap name = /etc/printcap
load printers = no
guest account = root
log file = /opt/var/log/samba/log.%m
max log size = 50
security = share
encrypt passwords = yes
smb passwd file = /opt/etc/samba/smbpasswd
include = /opt/etc/samba/smb.conf.%m
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
dns proxy = no
preserve case = yes

#============================ Share Definitions ==============================


[MediaVault_SMB]
comment = Brian Only Write Access to MediaVault
path = /tmp/.cemnt/mnt_sda2/
valid users = begun
write list = begun
browseable = yes
available = yes
printable = no
public = yes
; read only = no
guest ok = no
create mask = 0777

;[ShareAll]
;comment = Test share
;path = /tmp/.cemnt
;browseable = yes
;available = yes
;guest ok = yes
;writeable = yes
;printable = no
;public = yes
;create mask = 0777
')