samba - Aug 2013 - Windows 7 Dynamic DNS updates problem

Hi list, I?m running Samba 4.0.7 updated from Samba 4 stable.
Running DNS updates with Windows Xp works ok.
When I want to do the same with W7 It doesn?t work. I run tshark and it
seems that windows 7 complains about the CNAME registry that is missing.
I have allowed signed and unsigned updates in my smb.conf

Any hel?

Thanks in advance!