It is an enormous waste. Think for a moment. When something like this happens, you actually have a choice. You can either let it consume you, and set a negative tone for the whole day, or you can let it go, and move on to more important concerns. Closely related to reaction is blame.
Blame is a trap that many people fall into.
Trying to assign and publicize blame for situations and events is fruitless. It really doesn't matter who is to blame, because there's nothing you can do about it. Knowing who to blame does not change the situation. Don't waste your time figuring out who is responsible for a bad situation. Instead, spend your efforts to determine who is best equipped to get you out of the situation.