My wireless sync experience
My configuration:
Windows 7, 64 bit running on Lenovo T400 laptop, connected at home over wireless, 5.4GB n wireless network (dual band router)
iTunes vers. 10.5
iPhone4, 32GB, GSM - AT&T, upgraded to ios5 (connects to 2.4GB n band)
iPad I, 64GB, Wi-Fi only, upgraded to ios5 (connect to 5.4GB n band)
iPhone4
1. Connected iphone to PC over USB and did successful sync the old way.
2. Checked the box to allow Wi-Fi sync then hit apply.
3. Unplugged USB cable from Laptop and plugged into wall charger.
4. Locked iPhone screen.
5. iPhone still appears in the iTunes window just as if it were still connected by USB.
6. Clicked on the iPhone4 icon.
7. Hit the "Sync" button
8. Sync worked correctly. Even though nothing had really changed in my library, it had a lot of messages scrolling saying it was updating album artwork, but not the songs themselves.
iPad
followed same procedure, except that it fails. It sits there for a while as if it is syncing, but then eventually says something to the effect "Sync failed to start in time"
Robert