Jack, can you be a little more specific about the character of the noise, ie scraping, humming, metallic or whatever. New pads, rotors does not always mean a good fix. What was the original problem and did the replacement of those components resolve it. If you had a dragging caliper, then it is likely that you would be able to smell it when you got out of the car. Could be something as simple as binder resin building up on the face of the pads. Was all of the replacement stuff OEM?? It has been my experience that if a bearing is shot or on the way to being shot, use of the brakes has very little effect on the level of the noise. In fact on a BMW 325 that I owned, use of the brakes made the bad bearing even noiser..
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.