Apple on Thursday released Mac OS X Server v10.6.4 Update (v.1.1) and Wiki Server Update 1.0. 
According to notes provided with the update the updated version of Mac OS X Server includes Safari 5 and general operating system fixes that enhance the stability, compatibility and security. Specific items fixed in this release include:
- CalDAV querying of email addresses with Active Directory and Open Directory servers
- stability and reliability accessing Wiki Server pages
- view movies on Wiki Server with Safari on iPad
- accessing publicly accessible Wikis when logged in to the Wiki Server
- listing blogs on Wiki Server
- vacation mail notices that span across multiple days
- updates from Software Update Server viewable by clients
- stability and reliability to Software Update Server synchronization
- downloading of software updates by Software Update Server
- creating NetInstall images which include iLife updater packages
- address issues copying, renaming, or deleting files on SMB file servers
- improve reliability of VPN connections
The Wiki Server update includes improvements and fixes for:
- authenticating users with high-bit characters in their full name
- allowing access to wiki group calendars from the iCal client
- preventing wikis and blogs from becoming inaccessible after migration from Leopard Server
- starting wiki services after a page was modified by a user using their full name or alias
- listing private blogs when accessed by their owner
Mac OS X Server v10.6.4 Update (v.1.1) and Wiki Server Update 1.0 are available as free updates from Apple’s website.