Apple's Wiki Server Update 1.0 (part of Mac OS X 10.6 Snow Leopard Server) is a minor maintenance update that addresses a handful of general reliability issues. Issues addressed include authenticating users with high-bit characters (such as accent marks) in full user names, enabling wiki group calendar access from iCal, enabling wikis and blogs to remain accessible after a migration from Leopard Server, starting wiki services after a page was modified by a user using their full name, and displaying private blogs that have been accessed by their owner. The update, whose changes are also included in the just-released 1.1 update to Snow Leopard Server 10.6.4 (delta and combo), is available via Software Update and the Apple Support Downloads page. (Free, 26.3 MB)
Wake On Demand in Snow Leopard
Putting your Mac to sleep saves power, but it also disrupts using your Mac as a file server, among other purposes. Wake on Demand in Snow Leopard works in conjunction with an Apple base station to continue announcing Bonjour services that the sleeping computer offers.
While the requirements for this feature are complex, eligible users can toggle this feature in the Energy Saver preference pane. It's labeled Wake on Network Access for computers that can be roused either via Wi-Fi or Ethernet; Wake on Ethernet Network Access or Wake on AirPort Network Access for wired- or wireless-only machines, respectively. Uncheck the box to disable this feature.