Interesting thread. I was just about to chime in with:
ps -er |head
but got beaten by sammich (ps -A).
Seems we still don't know why Activity Monitor wasn't showing that proc.
Because an average mum who just found out what the Activity Monitor is shouldn't be scared away with freakishly named print jobs, I suppose.
Another thing is that the command line is somewhat altered, this may have to do with that. The PostgreSQL server connections (which fork a process for themselves each) don't show in my Activity Monitor, either and PostgreSQL alters cmdlines to be informative.