Here is some of what I have gathered... and some of what I've been chewing on...
The 5 things that bring about confusion or disunity:
1. Poor Communication
3. Unresolved disagreements
4. Lack of shared purpose
5. Sanctioned incompetence
Thoughts on going #2... Gossip
Your negative comments should go to a supervisor and your positive comments should go to a co-worker or someone that works for you. Don't talk about your problems with people who can't fix them. That's gossip! I have seen and experienced the destructive force of gossip. Gossip is so easy to do and to be a part of; it is a battle to not jump in and destroy. It takes so little strength to gossip. There is no risk of authentic relationships involved in gossip. I certainly haven't perfected this one, but I am determined that I will not play a part in gossip. My personal character and integrity is worth more than a few fleeting moments of lame conversation.
I have been in a work environments where a lot of these things have been present: incompetence, gossip, disagreements, and lack of shared purpose. Yes, they are destructive and drive a serious wedge. As a leader these 5 things must be fought fervently and fought daily. I don't know how to say it any differently... stop everything and evaluate the fabulous 5 team killers. Don't take another step until you are sure that you fighting the 5. They can creep up.