You might remember a recent incident where the International Space Station's (ISS) computers went down. Much international finger-pointing resulted. Now it turns out that condensation was the cause of the failure: an interesting summary of the NASA investigation.
Speaking of flying, many people use web-based "flight trackers" to check commercial flights. You'd assume that the flight trackers share the same base requirement of estimating arrival time. So, as Scott McCartney asks in his Wall Street Journal column, since when is four hours late considered "early"?