As far as developers are concerned, the integration of Grand Central, OpenCL and a 64 bit kernel will allow you to take full advantage of the dual processing power of Intel Macs. In what was an expected move on behalf of the company headquartered in Cupertino, California, the Mac OS X 10.6.2 incremental update for Snow. If your Mac is operating at a slow pace, then for that reason alone it is worth the upgrade to OS X 10.6 Snow Leopard. Mac OS X 10.6.2 (Snow Leopard) Available for Download. Faster Installation Time: Installing Snow Leopard on multiple machines takes approx 15 minutes in comparison to around an hour for Leopard.Microsoft Exchange Server Support: Mac users can now connect to Microsoft Exchange 2007 servers via Mail, Address Book, and iCal.Safari Beta 4 Default Browser: Apple included a beta version of Safari 4 with Snow Leopard.Cocoa Based Finder: Finder has a new Cocoa Desktop Window and Contextual Menu.OnyX only runs from an administrator account. Slimmer QuickTime Player: QuickTime X features a simplified GUI with a greater focus on codec support. OnyX 2.0.6 for Mac OS X Leopard 10.5 Requirements: PowerPC-based Mac or Intel-based Mac using Mac OS X Leopard 10.5.This version of Apple's OS also has a reduced footprint. This update does not have stacks of new features, rather overall improvements and efficiency upgrades. Mac OS X 10.6.8 Snow Leopard is an upgrade to the previous version of OS X Leopard.