badly written code - when codes go bad

in our line of work, badly written codes don't do a serious amount of damage -- they may for example crash a computer, or obliterate some important data. in the real world, bad code can be more frightening. check out this story i saw on slashdot a minute ago:

"An article at CNN's website reports on a serious software bug at the Atlanta airport." From the article: "TSA screeners are given tests around the clock to check their alertness. Images of bombs and other suspicious devices that are hard to detect are put up on the X-ray machine, followed after a brief delay by an alert that reads, 'This is a test.' After reviewing a tape of the images, Hawley said the software failed to alert the screener of the test."

i'm wondering whether anyone has every lost their life due to badly written codes?