POSSIBLE FIX!!! still in test but looking good.
I had the same problem too. after few resets. finally i decided to delete my seldom use apps. after delete few. the "gone crazy sickness" become less and can use longer time before it "sick" again. with that indication, I delete all old app that doesn't fit the iPhone 5 screen size. Wah-la! it work fine till now.
try it and see it work on you guys phone.