Sometimes it's a matter of straight-out fraud, where buyers are not doing enough due diligence.
The report into what went wrong at RBS, published in 2011, said there not been enough due diligence into the takeover.
Mark Roberts, director of research at Off Wall Street, an early bear on Enron's stock, said Dynegy "obviously didn't have enough time to do enough due diligence".
The system of military commissions favored by the Bush administration, he said, does not guarantee enough due process rights for detainees.
While this has raised compliance standards and costs, some banks are not universally turning down customers from certain countries, so long as enough due diligence is done.
There were many who worried that Germany was not using its power actively enough, due to the country's historically based discomfort with exercising military force.
Mr Keating said he was "not confident" that security at UK military sites was good enough, due to a lack of police resources.
"Prior to WorldCom, I think Wall Street always felt that with enough due diligence in the cash flow statements and financial analysis, one could always be certain where the financial health of a company might lie.
Obama also believed that the Administration's secret process establishing Awlaki's guilt provided adequate safeguards against mistake or abuse all in all, enough "due process of law" to take his life.
As winter looms her fear of surviving grows because she can never get warm enough due to being on a prepayment meter, which is more expensive than a normal gas meter.
Rating: 6.5 Herculez Gomez: Like Dempsey, Gomez was not able to get involved in the game enough due to the poor play from the midfield but he still was able to make some effective plays.
