Recently I noticed severe performance problems with my PC and discovered that ekrn.exe was using 100% of the CPU. When I hover the mouse over the eset icon in the systray, it says "Startup scan in progress" When I open the control panel and go to the Statistics page under Protection status I can see the Scanned object changing which implies that it's indeed scanning. The number of clean objects is currently 6691249 and counting (but it also says 100%). There is no reason for it to be doing a startup scan. The computer has been up and running for days now. And there's no reason for it to be doing a complete scan as those are specifically scheduled for late at night. So....what is it doing? And how can I stop it? I am running Windows 7 with all the latest critical updates. ESET NOD32 version 4.0.467.0 The Update page says my virus signature database is up to date. Thank you.