Mac OS X Update 10.4.5
10.4.5 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
Gentleman, start you Download! ;)
Combo Version webpage. 10.4.4 to 10.4.5 version webpage.
Source, Melablog.