Ever got projects not going over Budget?
You might have a problem with the project leader or he has a problem with the tools he is using.
Poor Communication between Management and Personnel might happen due to long distances between the experts in all fields. Human Errors caused by misplaced decimal points or wrong schedule. Loss through damage or malfunction when implementing things based on the wrong documentation. Lack of foresight and poor Allocation of Resources are just some of the difficulties your projects have to run trough.