No Idle Quick Scans

We have Norton 2010 on two computers and haven't got any Idle Quick Scans since Saturday when we got two. It's not unusual to get none on Sunday, but we have been getting at least one every day but Sunday. Once in a while we get only one Idle Quick Scan but so far today at 4:42PM Eastern Daylight Savings Time we haven't had a Quick Idle Scan. Is there something wrong that we're not getting it?