A couple times a month I run out of process slots due to 20 or 30 copies of talkd being active. We run IRIX 3.3.1 , is there a bug in it so I should remove it from the system? Perhaps there is a known way novice users can "abuse" it? Worst case: some hacker has found a hole and ... Thanks, John yates at a.chem.upenn.edu