Remote terminal sessions lock up and daemons flake out

[Danny Howard]

This last problem has started to happen only lately.

I log in from my FreeBSD workstation, on an xterm, via ssh to a remote 
machine running 4.9.  I often sudo -s.  I'm using tcsh.  Lately, I leave 
the session for a while and come back and the session is locked up.  I 
can't exit or anything.  I kill the xterm and restart.  I reconnect to 
the box, and there's no hanging session ... any advice?

Possibly related.  This is a Plesk box.  The httpd and spamd frequently 
fail.  I've got a duct-tape script in cron to check these demons and 
restart.  Pointers on where I might look, perhaps in sysctl, to pinpoint 
what might be happening?

Thanks,
-danny

-- 
Danny Howard                                    djh at servercentral.net
Technical Support Manager                          (312)829-1111 x235
Server Central Network                  http://www.servercentral.net/