Child processes not being killed

[Deb Kauffunger]

We execute jobs to kill users who have been idle for more than 20 minutes by
reviewing a "who -u". Every once in a while, when the PPID of the user shown in
the "who -u" is killed...the child processes are not. Has anyone run across
this before?? Any suggestions would be appreciated.

[Jung-hoon Kang_1]

'kill -9' can't kill all processes always.

Add this to user's .profile or /etc/profile
if they use /usr/bin/sh.

export TMOUT=seconds

This will automatically disconnect after seconds+60sec.