I am speechless, no spares for a vital system like the Urine reprocess? With the imminent retirement of Shuttle they had better get their fingers out and make some me thinks. Its only with six people that they will really get a lot done after all.
Thinking about how this centrifuge works, seems to me that what may have happened is that in the motor casing some debris has accumulated on the ground for some reason, Gravity will of course make this be at the bottom out of the way, but in micro gravity, it would be very easy ...