Comment 16 for bug 175689

As Carasof's reply details, that message is now displayed in the Sharing Options dialog, and following it's instructions allows you to share the folder successfully.

However, this is not a very user-friendly way of allowing NTFS drive sharing, would shipping the default smb.conf with "usershare onwer only = false" be a better long term solution?

A better method would simply be a confirmation box that popped up when sharing an NTFS folder that explained the security risks of enabling this setting, asking for confirmation, and then doing the smb.conf change automatically. Every time I have to go into a config file when using Ubuntu, I feel it has somehow let me down.