Ubuntu 10.10 i386 in VirtualBox 3.2.10
About Ubuntu 10.10 Server:
Ubuntu Server mixes effortlessly with Ubuntu, Windows or Mac OS environments. All clients can share authentication, swap files and access services, while Open LDAP, Likewise-Open and PAM authentication come as standard.
Tighten security by defining access to specific users and programs. Uncomplicated firewall technology makes access secure yet simple, while a home and private directory encryption service adds another layer of security.