[Samba] can "root" still connect clients to a domain?

[Helmut Hullen]

Hallo, samba,

when I connect a Windows client to a Samba domain I am asked for the  
user's login name and password on the Linux server who has the rights to  
do this job.

Under Samba 3.0.22 and older I could use "root" with a password defined  
via "smbpasswd" (must not be the Linux password). Under Samba 3.0.28 and  
newer this way seems no more possible; I have to use another user from  
the "admin users = xxx, yyy, zzz" line.

Is that a change which is somewhere documented?

Please excuse my gerlish.

Viele Gruesse!
Helmut