When I was testing the Eicar File with Avast on my win98se machine, Avast does not seem to like it. My machine was freezing when I attempted to download the file. On another note, I must have by accident, backed up My documents directory that still had the Eicar test file in it. My backup program stores the directory as a Zip file and Avast caught it on the last scan of my D:drive. The problem was that Avast could not get rid of it no matter what option I selected. This happened a couple weeks ago and I can not remember the error it was giving me. It would not move it to the chest, rename, delete on boot up, or anything. I just ended up deleting the entire zip file manually through explorer.