My iPhone 4S and iPad 2 just refuses to sync with my iTunes. They're on the same network, I've even put all devices on 2.4Ghz but still, the sync just refuses to start. Can't sync unless I connect the cable - what's going on? For those of you that have succeeded in making this work, are you all on Lion? (I'm still on SL) Can't really figure out what else I'm missing - it just seems like the devices refuse to recognize that the other is available even though all devices can see each other on the network.