Hello. As described I have windows 7 ...when I scan for updates with windows update ( or it scans for itself since I have it scheduled to scan automatically) I see some .exe that I know are related to windows update go up to 400-700 MB ram.When then scan is over after 5-8 minutes that they still using 400-500mb they suddenly drop to 50 mb and stay there until the next scan. Is this normal ? Does the windows update scan consume 500mb in windows 7 ? While idle my system consumes 1,5/8 GB Ram with only avast running as an application.I don't think I have malware since I am very careful.