There is a gr8 article in Engadget about the Mac OS X Server.
Over the past few years, I have had experience working with Mac OS X servers, whilst working for the Department of Education . I have always been disappointed with the lack of support for the servers, and have been frustrated with the lack of good deployment software. To me networking with Macs, is on par with gaming on Macs. Both are pretenders.
Apple produces fantastic consumer-grade models. They well deserve to be the "marketers of the decade".
But when it comes to the Big Time, as far as corporate goes, it is a world dominated by Cisco Routers and Microsoft Servers.