[Samba] Problem disabling computer objects

[Yosel Lazaro Vera Gonzalez]

I have many computers in my domain with different  operating systems such as Windos XP, Windows 7 and Ubuntu 14.04, 
I disable a computer with windows, then restart the computer, but I can log on to the computer with a user who has never logged on it.  
Do this for a computer with ubuntu and then it works, do not let me login with the user, because the computer is disabled.
I use the ADUC tool to manage active directory
Why my Windows computers disabled, continue to allow the login user?
Regards Yosel