Parallels Desktop has been updated to version 9.0.24237 with some fixes for issues related to the upcoming OS X Yosemite. The release fixes a crash that occurred when starting up Parallels Desktop 9 when running Yosemite, and it squashes a bug related to dragging and dropping files between Macs with Yosemite and virtual machines. It also removes a black screen that appeared on startup when running Mavericks 10.9.3 and 10.9.4 virtual machines, resolves an issue with Parallels Desktop 9 failing to update, and ensures that network connectivity remains after resuming a virtual machine. ($79.99 new, $49.99 upgrade, $39.99 educational, 361 MB, release notes)
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.