are you running this stock deodexed rom or Aeon?
are you running complete stock or with tweaks and mod?
are you using a battery saver? tweaks and battery saver like juice defender or it's like may be the cause
i downloaded this one,did a full and compleete wipe,imstalled..no mods,no added apps,compleete the way you have it..i did it because aeon was doing the same.
Sent from my SAMSUNG-SGH-I997 using xda premium