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)
Viewing Wi-Fi Details in Snow Leopard
In Snow Leopard, hold down the Option key before clicking the AirPort menu. Doing so reveals additional technical details including which standards, speeds, and frequencies you're using to connect, as well as what's in use by other networks. With the Option key held down and with a network already joined, the AirPort menu reveals seven pieces of information: the PHY Mode, the MAC (Media Access Control) address, the channel and band in use, the security method that's in use, the RSSI (Received Signal Strength Indication) measurement, the transmit rate, and the MCS Index. In Leopard, some, but not all, of these details are revealed by Option-clicking the AirPort menu.
Mac OS X 10.6.3 Combo Update 1.1
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