Jeep: #@%* Brakes Agravation, rear rotors, constant contact

Question
My front rotors/brakes were changed a month ago along with rear pads excluding rear rotor due to cash shortage.  I finally got tired of the squeeking and changed the rear rotors myself.  Upon completion and test drive she braked beautifully and quietly again...untill the next day when it restarted...at a much higher pitch.  

It sounds like its from the front wheels now so i checked and found my pads making constant contact with the rotor...

"is this due to the late overdue change to the rear of the rotor due to the pads being more worn then the front?"  Or possibly something else?

Answer
Brakes squeek because either the pads or the rotors are glazed, usually caused by excessive heat (riding your brakes, etc.)  They also squeek when the wear indicators are making contact with the rotors (metal to metal) but since your pads are relatively new, I doubt if this is the problem.