My thoughts on the series:
I don't think the series was fair for either team. Pakistan COULD have won this series 3-0, for all we know, given how they played and how India played on this Karachi track, but were not given the chance due to those stupid wickets at Lahore and Faisalabad. India COULD have learnt their lessons and played better to come back into the series, had the series had better wickets. I think we (Ind and Pak) fans have been robbed of a very exciting series because of those two wickets. But that said, Pakistan have clearly shown that ON the best wicket of the series, they WERE the better team. I still doubt whether they can be called a better test side than India, but atleast now they have shown that they are well on the way to being a very very good test side.
As Geoffrey Boycott pointed out in the post match show, the Pak batters showed that they were ready to adapt to the wicket. After their dismal performance in the first innings, all their top 6 batters put their heads down and played well in the second dig. At the same time, I still think their batters are technically weak even now (except Inzy) and it will be interesting to see how they go against England. But I have no doubt that their bowlers will do well, esp. if they actually include one more seamer in Rana Naveed, because I think he will do very well in the English conditions.
Coming to India, hopefully this defeat will serve as a wake up call to everyone in the side. Almost all the batters got found out on a decent track. I don't think this means that these guys are not technically equippped to play in such conditions. Dravid, SEhwag, Laxman, Tendulkar have all made runs in tougher pitches. It just shows that a few things may have crept into their games after playing on 3 featherbeds here in Pak. But I do think the Indian batters get bowled WAY too often for comfort, esp. Laxman. And hopefully, this stupid idea of tinkering with the opening position will be done away now. I still don't think it is worth it for India to risk its two best batsmen at the top of the order.
And Kumble seriously needs to get his act right. I have seen him bowl MUCH better on flatter tracks than Lahore and Faisalabad. Perhaps, the Indian attack got short charged as they never had the opportunity to bowl with a big score behind them, esp. the spinners. I do think it might have made a SLIGHT difference. But India won the toss in the match that mattered and had Pak at 39/6 and yet squandered the advantage. There is something seriously wrong with our medium pace attack. Maybe AA could have made the difference as a right arm bowler who can bend the ball back in at decent speed to the left handed openers. Ganguly showed that both openers were prime LBW candidates to right arm over the wicket outswing bowlers.
All in all, this defeat MAY not be such a bad thing for India provided they learn their lessons and NOT repeat these mistakes. Pakistan are a very good and talented side and there is no shame in losing to them (although it is shameful to lose so badly.
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On the positive side, I guess it means that most of the Indian trolls will now be gone. So, there is a pro to every con, I guess.
And of course, he has to be blamed for the loss, it would be stupid to consider that Pakistan actually have improved by leaps and bounds since the last tour in Pak 
It would also be stupid to consider that Pathan lost his pace right from the 2004 Ind-Pak series in India, played under John Wright. If India do not reach the Semis of the WC, it will naturally be Chappells fault, because obviously Wright was single handedly responsible for Sachins magnificent form in the 2003 WC, he was single handedly responsible for getting Zaheer and Nehra to bowl well on the whole in the WC, never mind the decline under him through 2004