Snow Leopard
Coming this Friday, Apple are releasing the latest version of OSX, Snow Leopard. Mine is on order, specifically so I can test the Exchange “out of the box” experience they promise.
What I did find interesting other than that was this nugget of information from Donna! Malware protection in OSX! Who’d have thought that day would come 
http://msmvps.com/blogs/donna/archive/2009/08/26/apple-sneaks-malware-protection-into-snow-leopard.aspx