From wearesc.com:

The horrible officiating to start the Trojans’ games continued against Notre Dame. What at first was laughable is now downright ridiculous. On the Trojans’ first punt, the referees missed an obviously blatant block in the back on the first Trojan downfield. On Tom Zbikowski’s punt return, the first two Trojans’ downfield were also blocked in the back, neither of which drew a flag. On John Walker’s first pass interference call, Irish receiver Maurice Stovall ran out of bounds, then was the first player to touch the ball, making him both an ineligible receiver and guilty of illegally touching the ball. Of course, 15 yards were marched off against the Trojans. The referees also did a horrendous job of uncovering the pile after an Irish fumble, which would have resulted in a 4th and 19 inside their own 10 yard line. The referees took their time uncovering the pile and refused to break up the individual spats going on around the play, each of which could have resulted in offsetting personal fouls. The ultimate result of the play? A fifteen yard personal foul against Josh Pinkard, called about five minutes after the end of the play.