Apple has released Aperture 3.2.4, which promises improved stability for the professional photo organizer and editor when running on Mac OS X 10.6 Snow Leopard. The only other item noted for this maintenance release is a fix for an issue that prevented the Viewer from updating correctly after editing a photo using an external editor. ($79.99 new in the Mac App Store, free update, 635.54 MB)
View Extra Audio Details in Snow Leopard
In Snow Leopard, Option-clicking the Volume icon in the menu bar displays a list of sound input and output devices. Choose one to switch to it; it's much easier than using the Sound preference pane. Also, hold Shift and click the icon to set the system volume, which is separate from the general output volume.