Hello, I can't make this work. ITunes is 10.5 Beta (windoes). Phone version is Ios 5 gm on iphone 4. I plug my phone to computer and from devices summary I check the box to sync this iphone over wifi. I apply and after it is set, the devices section disappears as soon as I unplug my iphone. I tried a lot of things. Tried to disable firewall settings. My phone and my computer are on the same network. (The computer is plugged to modem with an ethernet cable and the phone is connected wirelessly). I even reinstalled ITunes. I don't know what else to do or try. Hope to find a solution. Thanks.