Apple has quietly released Bonjour Update 2010-001 via Software Update, saying only that "This update improves the reliability of connections between iTunes and Apple TV." Previously known as Rendezvous, Bonjour is Apple's implementation of the Zeroconf protocol for discovering network services. Oddly, Bonjour Update 2010-001 hasn't yet appeared on the Apple Support Downloads page. (Free, 959K)
Enabling Auto Spelling Correction in Snow Leopard
In Snow Leopard, the automatic spelling correction in applications is not usually activated by default. To turn it on, make sure the cursor's insertion point is somewhere where text can be entered, and either choose Edit > Spelling and Grammar > Correct Spelling Automatically or, if the Edit menu's submenu doesn't have what you need, Control-click where you're typing and choose Spelling and Grammar > Correct Spelling Automatically from the contextual menu that appears. The latter approach is particularly likely to be necessary in Safari and other WebKit-based applications, like Mailplane.