[Samba] Guest account problem ... please help

[Rick Cone, Secure Payment Systems]

I have an internal Samba installation where I have security=share, and have
everything going to a guest account, in which I've made as user called
"samba".  When connected to a samba share on my UNIX system, I can can copy
and move files using my XP client, but I can't delete files?  I was
expecting Samba to follow the permissions of the user, which should be able
to delete these files because they are in a related group.  I've enclosed my
smb.conf.  The internal (guest) user I 'm using is called "samba", and it's
default group is "dl4ub".  The files and the directory their in have "dl4ub"
as their group.  Please help.

smb.conf:

[global]
     netbios name = spserv1
     server string = Samba
     os level = 255
     local master = yes
     preferred master = yes
     security = share
     username map = /etc/samba/users.map
     wins support = yes
     workgroup = SPS1
     socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 SO_KEEPALIVE
     log level = 1
     guest account = samba
     max xmit = 65535
     read size = 65536
     interfaces = net0
     bind interfaces only = yes
[NETLOGON]
     comment = Network Logon Service
     path = /etc/samba/netlogon
     guest ok = yes
     guest only = yes
     hosts allow = 192.1.1.
[unix]
     comment = unix
     force user = check
     force group = dl4ub
     create mode = 0000
     force create mode = 0660
     directory mode = 0000
     force directory mode = 0770
     path = /
     read only = no
     guest ok = yes
     guest only = yes
     hosts allow = 192.1.1.
     mangled names = no
[RDM-Ingenico]
     comment = RDM-Ingenico
     force user = check
     force group = dl4ub
     create mode = 0000
     force create mode = 0660
     directory mode = 0000
     force directory mode = 0770
     path = /u/ftprdm
     read only = no
     guest ok = yes
     guest only = yes
     hosts allow = 192.1.1.
     mangled names = yes
[g]
     comment = g
     force user = check
     force group = dl4ub
     create mode = 0000
     force create mode = 0660
     directory mode = 0000
     force directory mode = 0770
     path = /u/g
     read only = no
     guest ok = yes
     guest only = yes
     hosts allow = 192.1.1.
     mangled names = no
[web]
     comment = web
     force user = web
     force group = dl4ub
     create mode = 0000
     force create mode = 0664
     directory mode = 0000
     force directory mode = 0775
     path = /u/apache/htdocs
     read only = no
     guest ok = yes
     guest only = yes
     hosts allow = 192.1.1.
     mangled names = no

Thanks,

Rick