need more help brakes this time

well got the ball joints all done got the uca bushings done and put on some new brake pads while i was on it..( had them about 5 yrs now) so put on the brakes and now its got brake fluid leaking into the car from behind the master cylinder...i can here a little noise like something is rubbing or something...the master is only a few yrs old .whats the thought on this the master going out or the seal .. just started..i bleed the brakes and got air coming out and see the fluid inside the car.... man fix 1 thing then up comes something else...