iPad Won't Backup - No Error Message
iOS 6.1.3
64GB iPad with Retina Display
12.7 GB iCloud storage available
Current backup (July 6, 2013) uses 9.6 GB
Last iPad backup was July 6, 2013.
I have reset the iPad (Home Button + Power Button)
At the moment I am trying a manual backup. Here's what I see:
Spinning progress indicator followed by "Backing Up..."
A progress bar that hasn't budged in an hour.
A message stating "Estimated time remaining..." which has been there for the same hour.
My iPhone, on the same wireless LAN and the same iCloud account backs up regularly, all by itself.
My iPad used to backup regularly, all by itself, but, for reasons that remain mysterious, stopped on July 6, 2013. Every night my iPad is plugged in, locked and connected to the wireless LAN. Everything else works fine.
What now?