I own a 2000 BMW323 and find the brakes produce a high pitched squealing sound when I stop. It does not happen all the time and occurs just before I stop. The local dealer tells me the brakes are fine (I have 18,000 miles on the car) and the sound is produced because BMW had to eliminate asbestos from the brake linings. In traffic it can become a real pain, and I don't hear this coming from other cars. Anyone else have this problem?