If I'm understanding you. Did this happen only after you replaced the pads? You could have the calipers sticking where they move. If these was happening before , check the brake light and cruise control brake switches. If adjusted down too far it could cause the brakes to overheat after driving. I've seen some cars take 15-20 miles of driving before the brakes would get hot enough to cause this. Drive the car until they get hot and then jack it up and see if you can turn the wheels. Another thing could be the calipers themselves or in rare case even the rubber hoses can collapse inside and hold the brake on, however this usually will only affect one wheel. Good luck.