Apple has released iTunes 11.0.5, a small update with just one noted bug fix: squashing a bug that caused iTunes in the Cloud to download “unexpected” (i.e., wrong) items. Oops. It’s available as a direct download from Apple’s iTunes Web page (187 MB), via Software Update on systems prior to OS X 10.8 Mountain Lion, or via the Mac App Store on Mountain Lion.
Option-Click AirPort Menu for Network Details
If you hold down the Option key while clicking the AirPort menu in Mac OS X 10.5 Leopard, you'll see not just the names of nearby Wi-Fi networks, but additional details about the selected network. Details include the MAC address of the network, the channel used by the base station, the signal strength (a negative number; the closer to zero it is, the stronger the signal), and the transmit rate in megabits per second showing actual network throughput. If you hover the cursor over the name of a network to which you're not connected, a little yellow pop-up shows the signal strength and type of encryption.
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