I've noticed in the last month or so the ESET icon in the Notification Area (next to the clock) keeps disappearing. often I can see it, but when I roll my mouse over it it vanishes. when I click the desktop shortcut to open ESET the startup screen loads. I think the software is still running ekrn.exe still shows in my system processes. any idea what the problem might be? i am running version 3.0.672.0 do i need to upgrade to version 4?