I flatly refuse to click on a button to Resolve All when there are sod all details given as to what it wrong. This time round it found problems in my network - aside from I don't have a network as such - but the last time I ran the Smart Scan this was my feelings on this so called Smart Scan aren't good. I don't have the GrimeFighter/CleanUp installed so it couldn't have run yet it says it has been optimized. I just ran one earlier today to see if the said bug was still present and it is.
However, there is a niggle with the Smart Scan in that the UI result even reports on features/functions that you haven't got installed. You can run the Smart Scan now and again if you wish as that does a combination of scans including the Home Network Security Scan (if that is what you meant). But I have ceased this practice for some time now, based in the above. I used to have avast set to do a scheduled weekly Quick scan, set at a time and day that I know the computer will be on. If they were active files then the on-access file system shield would be scanning them before being created, modified, opened or executed.
For the most part the on-demand scan is going to be scanning files that would be otherwise be dormant or inert. With a resident on-access antivirus like avast, the need for frequent on-demand scans is much depreciated.