samba - Nov 2005 - Guest account and deleting filed

I have an internal Samba installation where I have security=share, and have
everything going to a guest account, which I've made a "regular"
user and
password.  I can can copy and move files, but I can't delete any files.  I
was expecting Samba to follow the permissions of the user, which should be
able to delete these files.  I've enclosed my smb.conf.  The internal
(guest) user is called "samba", and it's default group is
"dl4ub"

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