Software Hell
According to this Business Week article "...most big companies depend on layer upon layer of hand-built, poorly documented computer code, which may conceal a variety of ticking time bombs--Y2K being just the most famous. According to the U.S. Defense Dept. and the Software Engineering Institute at Carnegie Mellon University, there are typically 5 to 15 flaws in every 1,000 lines of code... Just tracking down each bug eats up about 75 minutes, according to a five-year Pentagon study. And fixing them takes two to nine hours each. On the outside, that's 150 hours, or roughly $30,000, to cleanse every 1,000 lines. (1999-12-05)
The link address is: http://www.businessweek.com/1999/99_49/b3658015.htm