From his letter:
In recent decades, however, the Church in your country has had to confront new and serious challenges to the faith arising from the rapid transformation and secularization of Irish society. Fast-paced social change has occurred, often adversely affecting people’s traditional adherence to Catholic teaching and values. All too often, the sacramental and devotional practices that sustain faith and enable it to grow, such as frequent confession, daily prayer and annual retreats, were neglected. Significant too was the tendency during this period, also on the part of priests and religious, to adopt ways of thinking and assessing secular realities without sufficient reference to the Gospel. The programme of renewal proposed by the Second Vatican Council was sometimes misinterpreted and indeed, in the light of the profound social changes that were taking place, it was far from easy to know how best to implement it. In particular, there was a well-intentioned but misguided tendency to avoid penal approaches to canonically irregular situations. It is in this overall context that we must try to understand the disturbing problem of child sexual abuse, which has contributed in no small measure to the weakening of faith and the loss of respect for the Church and her teachings.
http://www.vatican.va/holy_father/benedict_xvi/letters/2010/documents/hf_ben-xvi_let_20100319_church-ireland_en.htmland, indirectly through Vatican II, 'secularization'. But that must be worrying for liberal Catholics - Ratzinger seems to be saying "see, the liberal Catholics in the 60s told us to be more tolerant, so we tolerated paedophilia. Now we better tone down the tolerance". This looks like an attempt to take the Roman Catholic church further right, to me.