3 quick scans a day normal? (NIS 2012)

Just a quick check:

 

In checking my NIS 2012 logs, I see that NIS 2012 is running, on average, 3 quick scans a day (and I often see that a 4th has been cancelled).  I don't recall that many quick scans being run a day by NIS 2011 (from which I upgraded).

 

Is this amount of daily quick scan activity normal?  Just checking.