Well, If you dont know, there are two types of terrorists/Talibans for PA. The good one and the bad one, depending upon wether they attack Pak or its neighbours. Although both are pakistans own creation.
Us frustration of pakistan not doing more is on the part of PA's reluctance to deal with AFG/INDIA/NATO specific terrorists.
It would be better that you guys first read some history of the operations done in those areas. In the past PA took on those terrorists/militants also which you guys and the Americans mention each day. Do some objective analysis to see why PA can't take on all of them at the same time.
Major reasons being, its a vast area with hostile forces all around, with the supply lines very vulnerable.
PA does not have specific troops deployed there nor it can spare more of them.
PA lacks night fighting capability, air borne assets for supply and attack purposes, to sustain long term operations lot of such assets and uninterrupted supply of spares are needed. Even ammo for such things are needed as they are not local made.
Lack and scarcity of PGMs and delivery systems.
Surveillance equipment scarcity.
So priority for PA is Pakistan first. The elements which threaten and try to destabilize Pakistan are first and foremost priority and after that other elements.
It would be better that those guys who try to tow the line of US and ask PA to do more or do action against the Afghan Taliban elements, they should first study what the US forces have done so far in Afghanistan to subdue the Taliban except for emptying border posts or leaving their bases to Taliban with ammo and weapons intact or giving full provinces to Taliban especially the province near to Bajaur Agency where all the militants went to regroup with the blessing of local Afghans and US forces who not even killed a single militant fleeing Pakistan after PA was hot in their pursuit and now those same militants after regrouping in the Nuristan province which the US forces emptied are coming back into Bajaur Agency and creating chaos, and especially the Afghan Taliban ones who are operating way inside deep in Afghanistan, hundreds of miles away from the border area with Pakistan. Would be better you guys have a look at the map of Afghanistan and see the 80% area in which Taliban are active heavily, it may dawn on you guys that this 80% area is not with the Pakistan border rather way deep inside Afghanistan, hundreds of miles away separated by a treacherous landscape and taking weeks to do such journeys to Pakistan border.
Also ask the US forces and its govt that how come millions from their aid money is landing into the hands of the Afghan Taliban, leave aside the drug money which is in millions too. If the US forces and govt can't control & do their part of the deal, why do they ask us to do their job. Even if we launch an attack on the Afghan Taliban over here, they can easily go to the 80% of heavily infested Afghan Taliban domain in Afghanistan.
If NATO forces with such hi-tech military forces from different nations at its disposal can't control a few hundred or thousand Afghan Taliban deep inside Afghanistan, well then our rag tag outdated, ill equipment military is doing a very fine job.