I've submitted this problem to Nod32 support last Friday and still haven't received any reply. So maybe here someone will guide me. I have installed Remote Administration Server on Windows 2000 server and successfully deployed over 60 clients. Couple of days later I've noticed that disk performance on that server dropped substantially. As there was no Nod32 Antivirus installed, I've decided to look for problem elsewhere. Took me a day to figure that it was Remote Administration Server service which was causing all the slow down. Here are graphs done by HDTune with service enabled and disabled: http://banginis.nomagic.com/shared/hdd_nod_enabled.png http://banginis.nomagic.com/shared/hdd_nod_disabled.png System runs on Windows 2000 Server with software RAID1. Have any idea how to fix this isssue? Repair didn't helped. Thanks!