Reading this thread had me thinking about it and there are many, many reasons that have turned our season...
The ongoing Tevez debacle, which we still haven't really sorted.
The loss of Yaya and Kolo during ACON, we knew this was coming and we did nothing about it.
Compounded by the loss of Vinnie for 4 games after the derby sending off, cost us progression in both the cups, and Savic was not up to the job, we didn't add to the centre half spot when guys like Cahill and Samba were available, and that's caught us again over the last few games with Vinnie and Lescott being out.
Not correcting the away form since christmas, weather it be by adding players in January or changing the way we played and being more defensive.
Having absolutely no idea how to cope with teams putting 10 players behind the ball, Sunderland, WBA, Liverpool and Everton all did it in January, and that's when it all started to go wrong.
Not realising early enough that Silva, brilliant as he has been, may be playing with injury and was off form and actually dropping him for a few games, allowing Nasri to flourish in the free roll.
The consistent media circus around Mario, has never been dealt with, love him or not, and brilliant player as he can be, it clearly effects players and the club. He has been managed poorly and allowed to continue with the regular antic on and off the pitch.
And if I had more time I'm sure I could come up with a few more, we've been in 6 competitions this season, that's six chances of silverware, Charity Shield, Carling Cup, FA Cup
Champions League, Europa League and Premier League, it is very disappointing that we're not going to have anything at the end of the season.
And I'm afraid that only one man has been involved with all this and that's Mancini, I'm NOT looking to get rid of him, but I really hope he learns from this season.