I regularly go to eicar to test Avast that it is working and every time I test it the webshield catches the virus and aborts the connection.But today I deiced to test Avast again and this time the standard shield caught the virus, not the web shield. So, I checked the web shield and it was on but no files have been scanned and under Comodo firewall traffic list the web shield always appears but now I don't see it anymore.