[CentOS] Centos6 Migration glitch - Samba

Folks

My experiments have shown that Samba behaves differently in Centos 
5.6 and Centos 6 (updated).

In Centos 5,
   service smb restart
restarts both smb and nmb.

In Centos 6, however, it restarts only smb.

REMEDY:
   a) Make sure that both services running
   b) Issue
      chkconfig smb on
      chkconfig nmb on

IS THIS THE DESIRED BEHAVIOR
I have no idea if this difference is a "bug" or a "feature", and 
leave it to others to determine that.

David Kurn