samba - May 2006 - Cannot write over root owned file

I mount another Linux machine with:
smbmount tillie/all /mnt/tillie -o uid=0

Trying to copy a root owned to file after either su or su -
fails with:
cp: cannot create regular file `/mnt/tillie/usr/local/bin/smbmt': 
Permission denied

Since I have root priviledges why does this happen?

The file perms are:
-rwxr--r--  1 root root 4.6K 2006-05-02 16:58 smbmt

I get the following message on Tillie in /var/log/samba.192.168.0.5
but cannot decypher it:
[2006/05/02 17:10:37, 3] smbd/sec_ctx.c:set_sec_ctx(288)
   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0



I see nothing in tillie's smb.conf to prevent root access.
Is there something built-in to Samba to prevent root overwriting a file?

This is tillie's smb.conf:

[global]
         workgroup = LANET
         server string = Samba Server %v on %h
         map to guest = Bad User
         log level = 4
         log file = /var/log/samba.%m
         time server = Yes
         socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
         hostname lookups = Yes
         logon home = \\%h\%u
         os level = 65
         preferred master = Yes
         domain master = Yes
         wins proxy = Yes
         wins support = Yes
         hosts allow = 192.168.0., 127.

[homes]
         comment = Home Directories
         read only = No
         browseable = No

[all]
         comment = Entire disk from /
         path = /
         read only = No


-- 
Larry Alkoff N2LA - Austin TX
Using Thunderbird on Slackware Linux

> Is there something built-in to Samba to prevent root overwriting a
> file?
Unless you have "invalid users = root" there shouldn't be a
problem.
Try creating a file instead:

 $ touch /mnt/tillie/tmp/test.txt

And then see who owns the file - it should be root (if you're connected
as root) but I suspect it'll be some other user.  You probably need to
specify the user when you connect, i.e.

 $ smbmount smbmount tillie/all /mnt/tillie -o uid=0,username=root

Cheers,
Adam.