Software that kills
"It appeared that if the doctor didn't fill out a dose or indicate how often the medicine should be taken, a default amount - such as "5ml" or "twice daily" - appeared on the prescription, Mr Chalmers said."
Glitch a threat to Nelson patients
Thanks to the story at the Risk Factor blog - Computerized Physician Order Entry Software Design Flaw in New Zealand
Probably the worst, and most cited, case of software that kills is the Therac-25 radiation therapy machine.
Are we ever involved in such? Possibly. If I made a mistake in a database I was working a few years ago the wrong type or wall thickness of steel might've been used in a refinery or other plant working with crude oil at very high temperatures or pressures. Mind you there were many other manual safeguards in there as well.