My devices used to appear under the "DEVICES" section in iTunes automatically every time I launched iTunes on my Mac. I could access them via WiFi at any time. Then one day both devices stopped appearing, and I have no idea why. I can get them to show up if I connect either one of them with a USB cable, but the usual WiFi connection is not working. I haven't changed anything on my devices or on the computer, as far as I know. Details: Devices are an iPad 3 and an iPod touch 4th gen, both running iOS 5. Computer is a MacMini running OSX Lion 10.7.4. iTunes version is 10.6.3 Both devices have the option checked to sync over WiFi The Mac and both devices are otherwise able to use WiFi for web surfing, etc. Any ideas?