I would say check your door seals, if they are hot, could be drawing air in, cold inside, so air contracts, air pressure out is higher, so pushes in. WHAT are your temp readings. Normal would be -21 freezer, +3 fridge. I would expect normal, for same reason. Check your door seals, Nothing inside stopping the doors from closing etc, make sure seals are clean.
Nothing inside the door frame posts etc, except for the freezer side if you have water dispenser. Nothing that is really going to heat up that much.
SD
December 2012