I would have thought the reverse tobe true. 'admin users' file operations are treated as root or a 'super user.' Try not to use it.
I'm getting lost in language; are you saying one of three users can access your share "Queston Files" or are you saying one of three users can access a file within the share "Queston Files?
---------- Post added at 07:25 PM ---------- Previous post was at 07:16 PM ----------
Sorry for the double post but i'm heading out for supper and...
You installed samba-doc so checkout Samba3-ByExample.pdf. It's under /usr/share/doc/samba-doc-SomeVersionNumber.
But the short answer is likely permissions on the file-system.