Speaking as a x seminarian (5 years,OFM Caps) I would have to agree with some that it starts at the top. I think the bishops and their lawyers have known about all this for years and they have been moving these people around.
That being said there were many priest and brothers who were a great influence on me and were good men. At the time some were WW2 vets who saw a lot of combat and had been through hell. So you could not throw the bull around (we did try).
It as also where I started to play guitar. Many at that time did and it was fun jamming with other guys singing tunes. It was not what people would think.
But getting back to the subject I think it is way too late for the pope saying he is sorry. Those pedophile priests (if in fact they are) have destroyed lives of many people for years to come and they should be held responsible.