Herman Edwards NY Jets - "Overall Edwards' tenure as head coach of the Jets was marred by chronic clock management problems, an ultra-conservative "Play not to Lose" mentality and a lack of any discernable defensive strategy philosophy, despite Edwards' supposed expertise in the cover 2 defense." Copied from Wikipedia.
Herman Edwards Kansas City Chiefs - Edwards continued his string of opening day losses however, at Kansas City his teams suffered from a litany of injuries and Ownership mismanagement. He did however have continued clock management issues and questionable play calling and his defenses suffered.
In all, I think he gets a bad rap however, some of it is warranted.