They've manged to make it to the five-year mark despite a few considerable bumps in the road, but it looks like one of the Mars rovers has once again hit a snag, and NASA is now furiously trying to sort out the problem. Apparently, the issue first arose earlier this week when Spirit reported that it had received its driving commands but didn't move. Things were then further complicated later in the day when Spirit failed to record its daily activities, and it seems to have been all downhill since, with t