If anyone uses Avira Antivirus and is fed up with the once a day pop-up, here's a simple solution. Insert a link to it in your startup folder and away you go
#NoTrayIcon
While 1=1
WinWait ("Notifier of Avira AntiVir Personal - Free Antivirus")
WinClose ("Notifier of Avira AntiVir Personal - Free Antivirus")
Wend