Nice day so far, double digit early morning temperatures of 10 degrees C. Cleaned the chain, cassette and derailer last night and must have got something on the rear brakes because the first time I used them this morning the squeal was so loud I thought I heard glass breaking. Cleaned the wheel and brake pads when I got into work but the squeal is still there. Please excuse me, I am on my way over to Bicycle Mechanics.