Recent high Load Average

Hey,

Recently our servers' memory becomes exhausted followed by a frequent server crashing. I've got a monitor running that sends a ps -aux output to me when the load gets high so I can see what's gobbling ram/cpu and it appears that the below processes are consistently showing up. Do you have any suggestions as to how I could narrow this further to isolated what's causing this? Possibly spam flooding???

Cheers,
Ryan

root 3356 8.2 0.7 185356 22176 ? Ss Nov21 353:06 /usr/libexec/webmin/virtual-server/lookup-domain-daemon.pl
root 8596 36.6 1.6 102536 51492 ? Ss 08:15 0:02 /usr/bin/perl /usr/libexec/webmin/status/monitor.pl
root 8597 40.0 2.1 91772 64904 ? Ds 08:15 0:02 /usr/bin/perl /usr/libexec/webmin/virtual-server/spamconfig.pl
root 8595 48.8 2.6 112148 83144 ? Ds 08:15 0:02 /usr/bin/perl /usr/libexec/webmin/virtual-server/collectinfo.pl

Status: 
Closed (fixed)