Slechts een maand en twee dagen na het verschijnen van Mac OS X 10.5.3 en daags na het staaltje neo-surrealistisch bewegingsvoetbal van Spanje in de EK-finale, heeft het Apple behaagd de vierde puntrelease van Leopard uit te brengen. Zoals we inmiddels gewend zijn, brengt deze nieuwe versie, die gratis en automatisch via de Software Update onder het appeltje en tevens via Apples site te verkrijgen is, nóg meer stabiliteit, compatibiliteit en veiligheid naar ons bureaublad. De update is nodig om je Mac te laten functioneren met het aankomende MobileMe, de opvolger van .Mac. Daarenboven is er speciale aandacht besteed aan de volgende onderdelen van het besturingssysteem:

General Includes 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.