OK. I don't know what's up with my iPad!!! I used the iOS 8 beta, iOS 8 GM, iOS 8, and iOS 8.0.2 and never noticed this bug. But since updating to 8.1, my iPad renames itself every few days. For example, I renamed the device to "Paul's iPad Air" about a week ago. Last Friday, its name was "Paul's iPad Air (2)", and now its name is "Paul's iPad Air (3)". Has anybody else encountered this bug? It only seems to be a problem on my iPad Air.