From the Orlando Sentinel by way of xeno:

NASA devoted much of its final briefing today (which ran from 10:45-11:30 p.m.) to problems with three critical Russian computers on the space station. As explained by NASA station program manager Mike Suffredini, the ISS has lost its "propulsive capability" after these computers mysteriously crashed Tuesday. Only one working computer is needed to command jet firings, but despite repeated attempts to re-boot, none of the trio has come back to life.

Oops!

10:16 < mdxi> "The lights, the fans and, thank God, the potty, all those things are working," Suffredini said.
10:16 < mdxi> (on ISS computer failure)
10:17 < mdxi> note for future designers: don't design a 6-way redundant system which actually fails when two nodes die
10:17 < mdxi> and further, don't hook your oxygen generator up to it