you’ve said it once already, and I already replied that it did work with 3.* as well ::slight_smile: … I discovered the feature (up and running) long before Firefox 4 even existed so… I have no idea if a present AV is actually being used (in FF3/4) but the download window in both cases displays a supposed to be AV scan activity. Whether it really happens is another question.

edit: just thinking the amount of time of that scan varies considerably, depending on the size of a downloaded file, so it must work. I’ll launch task manager next time it happens to see what Avast process is involved when the scan runs.