I'm not sure if this is useful to anyone, but I thought I remembered licensing being an issue with this once before:
http://www.advogato.org/article/814.html
"I really really AM relinquishing all copyright of all Samba-related source code that i have ever written, and am placing all that code into the Public Domain."
"Specifically, but not limited to, that includes the code in samba which made its way into nmbd (dating right back to 1.9.15.p6 and before, and also including the nmbd_multiworkgroup version), all modifications of smbd that made their way into versions of 1.9.15 and up, all versions known as samba_ntdom _and_ Samba TNG, the code that i cut/paste over to FreeDCE to integrate a NamedPipe Interface plugin and also the FreeDCE NTLMSSP authentication plugin i worked on."
-Brian