Apple has updated the combo updater for Mac OS X 10.6.3 (for details on that update, see "Mac OS X 10.6.3 Update Delivers Range of Fixes," 29 March 2010). Although Apple provided no details on what was changed, the only users who need to consider installing it are those who updated from Mac OS X 10.6.0 using the 1.0 version of the Mac OS X 10.6.3 Update, build 10D573 (in other words, someone reinstalling Snow Leopard from scratch and then updating to 10.6.3 in one step). Apple has also released the tiny (635 KB) Mac OS X 10.6.3 Supplemental Update 1.0 solely via Software Update for these users. The combo updater is available via the Apple Support Downloads page, and will be presented by Software Update to those reinstalling Snow Leopard from scratch. (Free, 785.29 MB)
Find Wi-Fi Networks with VirusBarrier X6
If you're in a location with multiple Wi-Fi networks, it can be hard to figure out which is the best one to connect to. VirusBarrier X6 can help - open the program's Network window to view a list of available Wi-Fi networks, complete with the name, channel, and signal strength of each.
Mac OS X 10.6.3 Combo Update 1.1
Air Display 2 lets you use your iPad, iPhone, or nearby Mac as
extra screen real estate for your main computer. Now smarter,
better, and 50 percent faster. <http://avatron.com/tidbits>