I use Kaspersky Personal Pro, and it updates automatically every day which is great. I also have the scanner set to run daily which generally takes between 15-18 mins. No problem as I run it late at night. Is it necessary to run it every day or should I just run it every week or so? Once the anti-virus bases are updated is it necessary to run the scanner as well? One more question. Is it necessary to have the KAV monitor in the sys tray or does it run in the background regardless? I assume it's the latter, but then what's the point in having it pop up in the sys tray if it isn't necessary? This happens when you hit the KAV monitor button from the programmes/start menu.