Apple has released Software Installer Update 1.0 for Mac OS X 10.6.8 Snow Leopard. This update fixes an issue that prevented Software Update from actually installing software that it detected was available. Normally, we recommend relying on Software Update to receive updates to Apple software. However, if you’ve been experiencing any problems with installing updates directly out of Software Update, be sure to download this installer from the Apple support page. (Free, 1.34 MB)
Smarter Parental Controls
If you've been using the parental controls options in Mac OS X to lock your child out of using a particular computer late at night, but would like to employ a more clever technique to limit Internet access, turn to MAC address filtering on an Apple base station.
To do this, launch AirPort Utility, select your base station, and click Manual Setup. In the Access Control view, choose Time Access to turn on MAC filtering. You'll need to enter the MAC address of the particular computer, which (in 10.5 Leopard and 10.6 Snow Leopard) you can find in the Network System Preferences pane: click AirPort in the adapter list, and click Advanced. The AirPort ID is the MAC address.