Been having a consistent issue where my iPad 2 (running iOS 7) won't backup to iCloud. Doesn't matter if I trigger the backup manually or just plug it into power and let it do its thing overnight. Example: right now the progress bar is at around 15-20% and the time left indicates less than one minute. It's been that way for the past hour. Anyone have any suggestions? I did a search through the posts here on top of searches through Apple Support pages & Google, nothing useful came up. Thanks in advance!