INCIDENT #1 ON JANUARY 5, 2011 - SUDDEN CHANGE IN BRAKING PERFORMANCE CAUSED CRASH. ACCIDENT OCCURRED IN COMPANY PARKING LOT. THERE WAS SNOW ON THE GROUND. I ATTEMPTED TO SLOW DOWN TO MAKE A RIGHT TURN. THE CAR INITIALLY STARTED TO SLOW DOWN. BUT AS I ATTEMPTED TO TURN TO THE RIGHT THE CAR STARTED TO SLIDE. I TRIED TO CONTROL THE SLIDE WITH THE BRAKES BUT THE CAR WOULD NOT SLOW DOWN AND IT SLID INTO A STONE CURB CAUSING OVER $1,700 IN DAMAGE TO THE CAR. THERE WAS NO FEELING OF ANY BRAKING OCCURRING. THERE WAS NO FEELING OF THE ABS BRAKES PULSING TO CONTROL THE SLIDE. INCIDENT # 2 ON JANUARY 19, 2011 - SUDDEN CHANGE IN BRAKING PERFORMANCE CREATED DANGEROUS STOPPING CONDITION. I WAS APPROACHING A RED LIGHT AT AN INTERSECTION GOING ABOUT 30 MPH. THERE WAS NO SNOW ON THE GROUND. THE ROAD WAS WET. I APPLIED THE BRAKES AND THE CAR INITIALLY STARTED TO SLOW DOWN. SUDDENLY THE BRAKES WERE NO LONGER SLOWING THE CAR DOWN. I THOUGHT THE CAR WAS GOING TO FAIL TO STOP AT THE INTERSECTION. I INCREASINGLY APPLIED MORE AND MORE PRESSURE ON THE BRAKE PEDAL AND THE CAR BEGAN TO SLOW DOWN. THE CAR DID FINALLY STOP AND DID NOT CROSS THE INTERSECTION. THE BRAKE PEDAL PRESSURE THAT I HAD TO APPLY WAS EXTREME - IT FELT LIKE A CAR WITH POWER ASSISTED BRAKES BUT THAT THE POWER ASSIST HAD FAILED. THERE WAS NO FEELING OF THE ABS BRAKES PULSING TO CONTROL THE BRAKING OF THE CAR.