Apple updates Mac OS X Leopard to 10.5.4

Apple in Mac OS X 10.5.4, the fourth update Leopard, because it was released in October last year.
The new version contains the usual set of bug fixes and security updates with iCal to get the most attention. iCal events will not delete that as a result of the last update, for example, Apple upgrade and said “increases the overall reliability iCal”. Airport and aerospace and Exposé also received several updates.

