Ian T:
   Scorers are part of the 'third team' - along with the 
   Umpires. As a team they must work together.  Scorers 
   should always sit together and compare score sheets 
   periodically - once an  over is good. The actual scoring 
   is only part of the job. They must understand ALL the 
   Umpires signals and know when to acknowledge those signals
   - remember, the Umpire will call and signal to the PLAYERS
  initially and only when the ball is dead will he turn and 
  signal to the scorers. And they should wait for your 
  acknowledgement before continuing. 

  If in doubt about anything, make a note and ask the Umpires 
  at the next interval.  They *should* be coming to you and 
  checking the score sheets agree as the responsibility for 
  the correct score is THEIRS not yours.  If there is an error 
  it must be fixed NOW.  There is no point continuing a game for 
  another 3 or 4 sessions when the scores are wrong after the 
  first session.

  The umpires decide how many balls have been bowled in an over - 
  they *should* be checking with each other EVERY over - look for 
  the little two finger salute they give each other when there are 
  two good balls to go - ALL top grade umpires around the world 
  *should* be doing it.  If you think they have bowled only 5 then 
  TOUGH!!!   If you think that was a seven ball over then TOUGH!!
   Never shout out 'One to go' or 'That's over' ...

  However, if it appears that the miscounting is happening a 
  lot you could mention it at the next interval - but beware!  
  It is often the scorers missing a dot ball or missing a wide 
  or no-ball signal that is the fault..