Hello All. I have had Samsung Captivate JH 7 twice and before that a JH6. I have had all of them do a self hard reset, wiping out email accts, all apps etc. This happened Friday when I was on phone talking, then (after rebuilding and reloading apps) today at at 5 am while connected to charger and not in use. Had the current one 10 days, thought it was OK, but no. I had ATK and Task Manager on in past, but was suspicious on Tak killers so left off this last time. Have used Lookout each time, though. Had a couple hundred apps loaded, but only opened a dozen since re-install. I've read about shutdowns, but this is a wipeout issue. Any idea what is happening? I actually had ATT store manager go to diferent store last time to see if a different lot might be helpful. Love the phone, prefer it to Iphone but need any help you can give. Thank You.