I had my brakes done a few (maybe three?) months ago; new pads and... disc thingys!! Since then, they have been squealing when I brake at low speed. It drives me nuts. We've seen the mechanic for years and I trust that he used good quality materials, but he said that the squealing would abate after a few weeks and it hasn't. With a new bub and recent school holidays, I've not had any time to take the car back. Any suggestions?