how do I know if my pc is being protected? Why didn't the icon move to my task bar?
The tooltip of the 'a' icon on the system tray must say how many providers are running (of 6 in total). Just put the mouse over the icon...
Or, click the icon, ask 'Details' and browse the providers to see more info...
The icon rotates just when a module is 'scanning' a file right now... Otherwise, it states calm and stopped
Of course, the avast! settings in your system could make the 'scanning' operation more frequently (for instance, if you choose to scan every open document or running program).
Wellcome to avast!