can anybody remember swann getting upset with fielder for dropping catch?

yep. it was discussed on tms this summer as well by him. it was a notts thing.

he claimed it was to left off steam, but it seems that bit of the message never reached a number of players.

It serves no good purpose to vent your spleen by using a nasty tone with teammates on the field if you think they have done something wrong. 

But this doesn't mean that players who don't give their best should not be criticised, far from it.

I reckon the better way is to take a reasonable tone but use critical words, or words that urge better performance. 

"Come on mate, you can do much better than that," might be an example.

I have definitely seen English bowlers carrying on like d1ckheads when they didn't like a piece of fielding.  But there again, I have seen Pietersen do things in the field that would have made me feel like bashing him senseless if I were a bowler, so he did need to be challenged over that, but it needs to be done in the right way.

I don't think a professional cricketer never mind an international cricketer needs to be told on the field of play if a certain piece of his fielding is not up to scratch

With respect toffee, I differ on that point.  I have played a lot of cricket, though not professionally, certainly at a very decent amateur standard.  One thing I notice is the fielders who are least alert, drift out of position, put in half hearted efforts etc, usually do not have the self awareness to know these things are true. 

It used to shock me to watch Pietersen jogging after the ball and nobody seemed to do anything about it.  And you have Vaughan now holding himself up as some sort of model of how to manage Pietersen.  This is a basic concept of management, you do not tolerate less than 100% effort if you want to get the best out of your team.

Most irritating thing about bowlers (and wicket keepers) is the 'Catch it' nonsense every time the ball is airborne, totally unnecessary, drives me bananas.

KP wasn't necessarily talking about himself (for a change) - you could have bl00dy good slip fielders putting down a difficult chance and Broad would be giving them the teapot stare
Then Broad would do a misfield and treat it like a great big joke
I keep wicket - if I put down a chance or miss a stumping do you think it makes me feel better if someone shouts at me or more importantly will I improve if someone shouts at me ?

Millington in the RP today gives the example of RL where a prop may knock on yet immediately his team mates pat him on the back and tell him to forget about it
With my lads footy - the manager has a go if someone misplaces a pass - if he has a go at my lad I politely tell him that he hasn't passed the ball to the opposition on purpose - he knows if he has made a mistake, he doesn't need someone shouting at him.

If KP was constantly jogging after the ball and it wasn't because of his dodgy knee then the management needed to pull him up about it

I agree completely that nobody needs to shout at anybody for making an error, it serves no useful purpose.

I always think it best to distinguish between lack of effort or focus on one hand, and undesired outcomes that come despite the player appearing to do everything right on the other hand.  The former needs to be dealt with and not accepted.  Shouting at the player on the field or using demostrative body language is not the way to deal with it, we agree on that.  The latter should needs only some encouraging words, so we also agree on that.

And given your last statement in the post above, I think we agree also on the need to deal with players who don't give the appearance of putting in their best effort.

what is starting to annoy me about this, is that Swann was adamant on TMS this summer that the shouting was a way of venting his frustration at the nearest and most obvious target. (although any sports psychologist should be telling them that getting angry and shouting does nothing to relieve the frustration, there are far better mechanisms)

but i actually think that's it's acceptable, so long as it's explained to the person who you are shouting at that it's nothing personal and why the bowler is doing it.

but that quite clearly wasn't happening based on the comments of plenty of people outside of the protected clique. so it means that Swann is talking sh1t to try and justify his behaviour.

Swann wants locking up for his performance on the Betfair advert, alone.