Why can’t the system scan go to the background ?
What a screen hog.
You can’t even move or minimise it !!!
I am the most important program running so I MUST be on top…GRRRRRRRRRRRRRRRRR

Very poor design AVAST !!! >:( >:( >:( >:( >:( >:( >:(

I can’t think of how many scan’s I cancel because I need to see something under it.

It sure is possible to minimize the scan screen.
Have you clicked on the _ (underscore) to minimize it?
If so, it sounds like you have a crippled installation.
See if a repair solves it.

I can't think of how many scan's I cancel because I need to see something under it.
why not run the scan when you are not using the computer.... or activate screensaver scan, then you dont have to think of doing it at all