I have Webroot set to scan my computer on a 24 hr schedule, each day at bootup, and as a quick scan -- or, essentially, every box is checked on the Scheduler and every box is checked on the Scan Settings.  At no time has my "scan" ever exceeded 4 minutes.  Not even when I perform a manual, deep-scan, and out of schedule.

 

This morning approximately 20 minutes after bootup, Webroot performed the scheduled, quick scan in 4 seconds.

 

That seemed extraordinary to me. 

 

I then performed a manual scan without resetting anything.  That quick scan took 1 minute and 42 seconds.

 

My question is: Why would the pre-scheduled, quick scan be only 4 seconds and why would a manual quick scan immediately after that be 1 minute and 42 seconds and why would my average scan-time over the previous 3 months never exceed 4 minutes?

 

Outside of the above, Webroot seems to feel that my computer is safe, has always been safe, and has never felt a threat.

 

If everything is working correctly, I am a very happy consumer.