No viruses or worms were or are detected on any internal or external disk of my laptop by Avast 4.8 Home Edition. But when I Erase the wastebasket beyond recovery with CyberScrub, some worms, Trojan horses and viruses are detected by Avast, for example Win32:Hupigon-AEL. It seems that the detected Trojan horses have something to do with .jpg files. Is this a false alarm or is there a problem with a normal scan? Thanks in advance for your replies.