Problem with READ only permissions

I'm not sure if this will help at all, but I encountered a problem which sounds like it had some similar symptoms in this thread.

Perhaps you can compare your share permission configuration with mine (although I am not using AD) and perhaps also explore the suggestion below that I found somewhere on the samba website.

There is a workaround to solve the permissions problem. It involves understanding how you can manage file system behavior from within the smb.conf file, as well as understanding how UNIX file systems work. Set on the directory in which you are changing Word documents: chmod g+s `directory_name'. This ensures that all files will be created with the group that owns the directory. In smb.conf share declaration section set: force create mode = 0660 force directory mode = 0770 These two settings will ensure that all directories and files that get created in the share will be readable/writable by the owner and group set on the directory itself.