Too much of a good thing -- We've heard a number of complaints that indicate you can overtrain a MessagePad to your handwriting. Too much training may confuse the poor little thing, causing recognition to decrease after significant usage. The only solution that seems to make any difference is to toss your preferences and start over. We hope Apple will have some suggestions about this problem soon.
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.