Comment 2 for bug 1043654

The 3 packages bring new features:

zentyal-users:

* major rewrite to support Heimdal Kerberos
* New master-slave architecture using REST instead LDAP replication (avoiding chained slapd replica, translucent, frontend)
migration is not possible as all passwords are stored in Kerberos keys format and before we had different hashes but no plain-text

zentyal-samba:

* major rewrite to support samba4
* integration betweek samba4, OpenLDAP and external Heimdal Kerberos
* roles supported: standalone domain controller, existing Windows domain controller/member
migration is not possible as we move from a samba3 based solution to a samba4 based solution

zentyal-squid:

* support of complex browsing policies multiple time slots based
* rewrite of the URL categories database dansguardian configuration to scale with many different profiles
existing configuration will keep working