As the aircraft reached approximately 20 kts during the take-off roll, no 2 engine failed. The take-off was rejected. No other damage to the aircraft was reported. The engine examination by the aircraft operator revealed that all first-stage blades had failed adjacent to their blade platforms. The damage was most likely caused by failure of blade No 35, which failed in high cycle fatigue emanating from the blade trailing edge. The operator experienced several similar failures previously. The engine manufacturer was aware of the problem and was undertaking corrective action.