今天 Apple 正式发布 Mac OS X 10.5.4，还有就是用于 Mac OS X 10.4 Tiger 的 Security Update 2008-004 安全升级。

10.5.4 的升级主要是为了即将到来的 .mac 到 MobileMe 的升级做准备，其他方面则是增加了可靠性与安全补丁的累积，解决了旧版的问题，Adobe CS3 的远程存取问题，X11 应用的安装问题，L2TP VPN 客户端可靠性问题，增加了对数款新的相机相片 RAW 格式的支持，还对 AirPort、iCal、Safari、Space 和 Exposé 等组件进行了升级，当然，所有 Leopard 用户都该升级了：

General

• Recent Apple security updates.
• Resolves an issue with saving and reopening Adobe Creative Suite 3 files on a remote server.
• Includes additional RAW image support for several cameras.
• Addresses an issue that may result in a partially installed X11 application.
• Improves L2TP VPN client reliability.

AirPort

• Addresses AirPort reliability issues with 5GHz networks.
• Addresses AirPort issues that may result in slower performance in Logic Studio or MainStage.

iCal

• Improves overall iCal reliability for meeting requests, cancellation notices, delegation, and syncing with iPhone.
• Resolves an issue that prevents deleting an iCal event without notifying the creator.
• Addresses an issue in which events in all calendars affect availability. A checkbox now enables information-only calendars to be transparent from free/busy lookups.
• Resolves a UI issue preventing delegated calendars from showing up as a separate window.
• Addresses an issue with copying and pasting attendees from one event to another.
• Resolves an issue in which iCal may not delete events after a specified time interval, even when set to do so in iCal preferences.
• Addresses an issue in which To Dos cannot be marked private.

Safari

• Addresses a potential performance issue when loading secure web pages.
• Resolves issues that may be encountered when accessing secure web pages with client certificates that reside on a smart card.

Spaces and Exposé

• Addresses an issue in which switching from a space with a Finder window keeps the Finder as the active application instead of the application residing in the destination space.
• Fixes an issue in which dragging an application from the list of application assignments in Spaces System Preferences does not assign the application to the desired space.
• Resolves an Exposé issue that may result in only a subset of windows being shown.

Tiger 方面则是安全补丁的累积，还有新版 Safari 3.1.2 的升级。

下载：

• Mac OS X 10.5.4 Update
• Mac OS X 10.5.4 Combo Update
• Mac OS X Server 10.5.4
• Mac OS X Server Combo 10.5.4

• Security Update 2008-004 (PPC)
• Security Update 2008-004 (Intel)
• Security Update 2008-004 Server (PPC)
• Security Update 2008-004 Server (Intel)
• Safari 3.1.2 for Tiger