Since the latest update of ISPConfig (not sure if that's connected), I've been finding that at about 6:40 each morning, the server starts using 100% CPU and ~100% Disk IO - this is reported through New Relic, which runs an agent on the server. Now I know a little about servers, but not a great deal... Attached are a couple of screenshots of top, htop, iostat and iotop. These screenshots are after a reboot - notice how it doesn't show apache or mysql, as the server didn't start the processes for some reason (maybe too busy?). Suppose this is a good thing, as it rules out an issue with apache and mysql etc. One thing that does stand out, is 'quotacheck -augm' using 99.99% IO when viewed in iotop. I'm not sure if this is normal or not though. My first thought was maybe the HDD is going bad, but this is a VPS so I would hope that my provider would catch that if it was an issue, however I won't rule it out. I would really appreciate if someone was able to offer some advise on pinpointing exactly what is going on, and how to sort it out. Many thanks in advance!