Microsoft software caused air traffic shutdown
`A bug in a Microsoft system compounded by human error was ultimately responsible for a three-hour radio breakdown that left hundreds of aircraft aloft without guidance on Tuesday, [..]
[..] a Microsoft-based replacement for an older Unix system needed to be reset every thirty days ‘to prevent data overload’, as a result of problems found when the system was first rolled out. However, a technician failed to perform the reset at the right time and an internal clock within the system subsequently shut it down.’
Slashdot suggests this bug is the cause.
