I installed iOS 7 on my daughter's iPhone 5 tonight. I performed a restore, set it up as a new phone, and then installed iOS 7. I then did a restore from iCloud. After the initial sync it reset and started to download all of her apps and data. As that began is popped up a box as it usually does asking for our Apple ID & password. Except when it did that "firstname.lastname@example.org" was pre populated in the username field. She is 10 and had no idea what that was. I did a google search and found a few other people that have had this happen --> https://twitter.com/psmy/status/314253220153286656 WTF?