I've upgraded to 4.2.1 on my wifi iPad, signed into my free MobileMe account (which says "Find My iPad" under MobileMe in Mail, Contacts, Calendars), downloaded the Find My iPhone app onto my iPad, and followed the steps on Apple's website on how to set it up. Location services are on. Find My iPad is on. Fetch new data is set to Push. My AppleID is verified. For some reason, my iPad isn't registering. When I open the app, it tells me that I have no devices registered. When I go to me.com, it shows I have no devices registered. When I go to the app on my iPhone, it shows no devices registered. It works for my iPhone 4. That set up easily, and I can locate it on my iPhone, iPad, and at me.com. Anyone have any ideas here?