[Sport71]

Halfway - my wife's Altima had the same issue. It turned out that one of the boots on the slider pins deteriorated, and the pin itself started to corrode after moisture got to it. This affected the caliper's ability to easily slide on the pins when the brakes were applied. I replaced all boots and pins, and lubed the new pins with Permatex disk caliper lube (the green stuff). Been working like a champ ever since ...