this website could save your life. similar story happened with my brakes. i happened to feel loss of braking power and was wondering why. My cluster did not mention anything was wrong with the braking system. Anyway, i decided to go to Sears Automotive and the mechanic looked at me as if I was dropped on my head. the first thing he told me was "how did you do it?" and my response was "do what?" He said the brake fluid in the master cylinder was "well virtually zero"; the rear brake cylinder (drum) was bleeding heavily and all the fluid leaked out but somehow I was still some how able to stop the car. I partly blame myself not paying attention to the maintenance part of the car. But the thing is that the cluster never mentioned the fluid level was low or that there was something wrong with the braking system. Anyway, the site you posted did mention this problem.