There we go again. FATA belongs to Pakistan, they are your responsibility. You are saying Pakistan is happy with FATA people doing whatever they want, as long as they don't bother mainstream Pakistanis. Pakistan should make sure that terrorists aren't being recruited and trained in FATA. Or Pashtuns from FATA aren't going into Afghanistan and flogging people amongst other no goods.
Ever thought why the WOT is happening in your backyard? No offence mate, but its "The non-state actor" bs all over again.
We have tried to seal the border with Afghanistan, it is the Afghanis that aren't ready, because they dream of a Pashtunistan with Pakistan's KPK and FATA regions in it. Karzai claimed the Durand Line is invalid and evil. We respect the territorial integrity of Afghanistan, they don't respect ours. Both Pakistan's and Afghanistan's problems would be solved if this border was sealed. FATA would become mainstream Pakistan like KPK, and Afghanistan would be stabilized. So please, blame the American forces and the Afghan leadership, Pakistan has always been ready.