Hi, I'm on Win7 64bit and latest iTunes and it seems that although WiFi sync generally works, it tends to cause freezes to the iTunes application whenever it seeks for our iphones over wifi (we have 2 devices at our home), or doing something else wifi-related. Does anyone else experience this? iTunes literally becomes unresponsive during these periods of upwards of 10-15 seconds, until it connects to the iphone, or whatever else it is that it's doing during this time. Another issue's the iphone will sometimes disappear although it's still on the same wifi in the same spot in the same room, then appear again. iTunes is of course frozen for the 10-15 seconds it takes for the iphone to reappear. Thanks for any input!