I have an ispconfig3 setup on a debian system as per perfect server guide.. Yesterday everything seemed to grind to a halt and it stopped responding to web or mail requests even on the local network until it had a complete reboot.. Then eventually i got into ispconfig and the monitor a state error stating it was operating at highest and a component needs an upgrade. I didn't see this myself so I don't have the exact report. So I managed to apt-get update and upgrade. It ran so some time and the only part I saw for any length was a debian image upgrade. This all worked fine after that. So my first question is what could have happened to cause such a major problem? Secondly, is their a facillity to set it up to email me if such a state was about to happen so I can get to it first?