Fielding woes.
As usual Harsha hits it on the head, with this peice: http://www.indianexpress.com/full_story.php?content_id=55723

excerpts:
" ..good teams play with six bowlers; five that turn their arms over and the fielders collectively acting like the sixth. More wickets are got in one-day cricket out of poor shot making than by great bowling. And therefore teams need to induce poor shot-making.
That can only happen if the easy shots are rendered ineffective. If the dab to cover or the gentle flick to mid-on consistently produce ones, if the shot to deep point invariably gives the batsmen two, they don’t need to try and clear mid-off or play the reverse sweep.
If, on the other hand, the in-field chokes the runs, batsmen will be driven towards the outrageous. That is how fielders generate wickets; by choking the bread-and-butter shots and forcing the batsman towards the exotic. That is why the best one-day teams have at least three brilliant fielders and five excellent ones, two or three who can dive around and four or five who have strong throwing arms and nobody who needs to be hidden in the field.."