[K12OSN] Inactivity log out

["John P. Conlon" <jconlon1 elp rr com>]

In my school we have two servers using K12LTSP 3.1.2.

Because our district insists that all terminals be turned off at the end 
of the day we have run into a problem.  Some of our students turn the 
terminal off  without logging off first.  The result is that the next 
day we have a problem when new users log on.  The server's limit gets 
reached and the new users either can't log on or the server crashes.

We need something that will log a user out if there has been no keyboard 
or mouse activity after a period of time.  In discussions with others at 
my campus we would like for this time period to be system administrator set.

Does such a routine exist?  If it does How do we make it work?

Thanks
Pat