July 6, 2010. Unfortunately, I still have the same problem at this time. I, once again, brought my car to the dealer with the same complaint. I went directly to the service advisor who went with me in the car and heard the "roaring/groaning sound", while I was driving. I asked him why am I still having the same problem if they changed my brake pads? He seems surprised! He asked me if I can leave my car for the whole day so they can check it again and hopefully solve the problem this time. After about 6hrs, I called the service advisor since I never got a call from him about any updates on my car. He answered the phone and told me that my car is ready for pick up. He told me that they changed the brake pads again and also changed the rotors this time, and that I shouldn't have to hear that "abnormal sound" again.
Up to this point, I haven't heard anything like it... Hopefully, I will never will.