ps -laxww for randmoness?

How about using ps -laxww as a source of randomness? Of course it would be run throug something like MD5 to get rid of the structure. This would not be good on a multi-user system because ps command may have been modified to log the person invoking it, time, and output to somewhere. But on a personal workstation that you trust, it could be a pretty good source of unpredictable data. This is not my original idea, I think it was suggested in one of the multiple precision math packages I looked at recently.