I have a 98 legacy outback with ABS and I would notice while driving that the play in the brake pedal would decrease but while driving along the other day the brake pedal lost all play and the brakes started to be applied without me even pressing the brake pedal. It was really hard to even depress the pedal at all and to even drive I had to give it a lot of gas because the brakes weren't letting go. After a while of driving a little bit then stopping and repeating the process the play for the brake pedal returned and I could drive back home as normal. This happens almost every time I drive now and I know it is at least both front brakes that are seizing up. I'm not sure what could be causing the problem and I can really only drive to work and school before the brakes lock up. I have flushed out and bled new brake fluid through all of the lines and that didn't help at all. I am thinking about taking a brake caliper off and opening it to see if there is a bunch of crud built up but I don't think there will be. Also when I start the car with my foot on the brake pedal sometimes the pedal won't lower a bit from the brake booster. Any help or ideas would be awesome. Thanks.