I have been receiving a warning that I'm not playing fair etc and now have to wait 5 minutes in between games.  I have no idea what I'm doing wrong.  This sounds like complete BS to me so any help would be appreciated. 

You probably aborted too many games... Check it out!

http://support.chess.com/Knowledgebase/Article/View/171/13/fair-play-policy

I've never aborted any games.  If anything, the opponent has left at the beginning of the game if I take more than 10 seconds to move.  I don't think that's it but who knows. 

Maybe you waited till the end when you were in lost position and hoping opponent will resign. If you have ~3 min and you don't make a move, you can be punished too.

I must admit I did it once, a year ago, when I joined chess.com. I waited until I've had 0,1s and in this time my opponent left the board and he lost on time :(

I don't thnk you play unfair... You played a great game with me so don't worry... You may have quit a game once or just aborted it on accident... These things happen.. It has happened to me once so don't worry..