Apple has released the Mac OS X 10.4.5 Update.
This Update is recommended for all users and includes general operating system fixes, as well as specific fixes for the following applications and technologies:
-Address Book, AppleScript, Automator, Dictionary and Font Book
-iCal, iChat, DVD Player, Mail, Preview, Safari and Stickies
-Disk Utility, Keychain Access, Migration Assistant, Software Update
-usability of Dashboard and widgets
-viewing of QuickTime streaming media behind a firewall
-time zone and daylight savings for 2006 and 2007
-RAW camera support, including updated ATI and NVIDIA graphics drivers
-sharing using AFP, SMB/CIFS, NFS and FTP file sharing protocols
-reliable access to Open Directory, LDAP and Active Directory services
-VPN connections to Cisco servers when using NAT
-AirPort and Bluetooth wireless connectivity
-compatibility with third party applications and devices
-previous Mac OS X updates and standalone security updates