Last night I had my phone on, unplugged when I went to sleep. The battery drained fully and I was told made a regular beeping (heavy sleeper, didn't hear it). The phone was dead when I woke up, so I plugged it in and powered it on, but for some reason the phone had completely restored itself to how it came out of the box. No contacts, emails, apps. Does anyone have any idea why/how this happened? Should I be worried about it happening again? Also, I foolishly did not back up my phone pre-erase. Does anyone know of a program that can take contacts off of my old phone and put them on my Hero? If not, I will have to go to the Sprint store tomorrow I guess, but I'd much rather do it myself. Thanks for any help.