I was just listening in to the NASAtv webcast which I plugged earlier, and it appears the launch for today has been scrubbed due to a faulty low-level fuel sensor. The odds of the sensor even being used are apparently extremely low, and the chance of the faulty sensor even causing a problem in that situation are even lower. Well, the crew is being unstrapped now. It took them over an hour to get on-board, suited up and strapped in – and all for nothing. Crap. And I was excited too. The repair involves emptying and detaching/lowering the external fuel tanks, so who knows when the launch will be rescheduled for. Could be tomorrow, could be next week.