The 10.6.2 update is recommended for all servers running Snow Leopard Server.

Here are some key features of "Apple Mac OS X Server Update":

This update includes general operating system fixes, as well as specific fixes for:
· directory service reliability and authenticating new File Sharing connections
· binding and authentication in Active Directory environments
· editing Wiki content in Safari, Firefox and Internet Explorer
· viewing Wikis and Blogs from an iPhone or iPod touch
· searching with Spotlight in the Finder and on the web
· sending 'Welcome' email messages to users in Server Preferences
· importing users and working with nested groups in Server Preferences
· randomization of DNS source ports and transaction IDs
· updating DNS information when server IP address changes occur
· hosting DHCP services
· supporting private events in iCal
· synchronizing Portable Home Directories
· enabling Software Update Server
· using SNMPv3 services
· hosting with WebObjects; update to version 5.4.3
· hosting mail services for users with long user names
· preventing mail server database corruption
· ensuring security of LDAP password hashes
· propagating password changes to Open Directory replicas
· creating and editing DNS records in Server Admin
· using System Image Utility to create NetBoot and NetInstall images
· creating augment directory records in Advanced server configuration
· using Managed Preferences when clients are bound to Active Directory
· providing RADIUS authentication to 802.11n-enabled AirPort Base Stations

What's New in This Release: [ read full changelog ]

Fixes for:
· Adding and removing imported users in Server Preferences.
· Synchronizing Portable Home Directory content.
· Using iCal web interface within select time zones.
· Previewing and capturing dual-source video in Podcast Capture.
· Server-side filtering of incoming mail messages.
· Using chained digital certificates for mail services.
· Creating images with System Image Utility.
· Automating installation of NetRestore images.
· Preventing brute force password attacks.
· Using sudo command with authenticated Open Directory binding.
· Binding to Active Directory domains with invalid service records.
· Creation of mobile accounts for Active Directory users.
· Correcting a problem that would cause the Software Update cache to grow excessively.