I have still the Problem with file saving Office2007 Documents on my Samba shares. I found this Bug here in Bugzilla and added the variable as documented here but this still not helps. (nt acl support  = no, profile acls = no)
When i open remote a Office2007 Document and would save it i ge the "write error" message.

Any help would be nice.

Here my config:
[global]
        workgroup = LIVINGLIQUID
        server string = Olymp - DataServer
        unix charset= ISO8859-1
        display charset= ISO8859-1
        interfaces = 127.0.0.1 eth0
        bind interfaces only = true
        hosts allow = 192.168.81. 192.168.86. 192.168.88. 127.
        os level = 99
        security = user
        map to guest = Bad User
        time server = no
        unix extensions = Yes
        encrypt passwords = Yes
        socket options = TCP_NODELAY IPTOS_LOWDELAY
        #socket options = TCP_NODELAY SO_KEEPALIVE SO_SNDBUF=8192 SO_RCVBUF=8192
        wins support = Yes
        name resolve order = hosts wins bcast lmhosts
        domain master = Yes
        domain logons = No
        local master = Yes
        preferred master = Yes
        load printers = No
        printcap = /etc/printcap
        printing = lprng
        #debug level = 3
        nt acl support  = no
        profile acls = no
##
[livingliquid]
   comment = livingliquid
   path = /daten/livingliquid
   valid users = @livliq
   writeable = yes
   create mask = 0740
   directory mask = 0750
   force create mode = 020
   force directory mode = 020
   guest ok = no

best regards,
thomas