Title says it all. Since updating to iOS 5.1, my iPhone 4 is no longer recognized by my MacBook Pro, neither over WiFi or USB. To check to see if the iTunes 10.6 update had anything to do with it, I synced my iPod 5G with no problem. I also plugged in my iPhone with iPhone Configuration Utility open, and no iPhone appeared. Anyone else having these problems? I've restarted the iPhone and the computer many times.