No Igor, my ‘Hide inactive icons’ just hide them and do nothing “more”.
gtaillandier, can you say us if the avast services are running and set to start automaticaly with Windows?
Administrative Tools > Services … search for: avast! Antivirus (formely, C:.…\Avast\ashServ.exe) and avast! iAVS4 Control Service (formely C:.…\Avast\aswUpdSv.exe). The second one is not preceptive to be running.