If you have been following Pakistani cricket of recently, you would have come to realise that the lads are working very hard indeed. They are very motivated and are ready to learn. So I'm afraid I fully disagree with you there. The hard work can clearly be observed from many a thing:

1) Reduction in the number of extras by Pakistani bowlers
2) Increased competition for places in the side
3) Huge improvement in players like Malik, Afridi and others
4) Much more reliable batting (Although still not consistent enough) with Inzamam leading the way and the youngsters responding brilliantly
5) Noticable improvement in fitness and fielding standards

Regarding concentration...Inzamam, Youhana, Younis Khan in the batting department and Akhtar and Kaneria in the bowling are very reliable. The younger lads have shown great patience and concentration in both test matches and ODIs recently. For example...Pakistan had to chase some huge totals against SL in the Paktel Cup and against IND in Kolkatta but even the younger players exhibited great patience and led Pakistan to victory.

I think you might be dwelling a bit in the past (No offence meant here)...the newer team under Woolmer and Inzamam is keen on learning and performing for their country.