I've just heard that NASA's grounded the shuttle fleet again - apparently the problem with the external tank shedding foam has been observed with Tuesday's launch. Unless there's a quick fix for this, which I doubt, then I seriously wonder if the shuttle with ever launch again?
Of course, it will have to fly at least once more as Discovery - my favourite, since it was on the pad when I visited the Kennedy Space Center in 1984 - is currently in orbit. Hope they all make it back home OK...