fire fox 3 beta 5

i downloaded the new fire fox bata and its pretty good but i have a question it says it entergraded with my anti-virus and after downloads it says scanning for viruses in the ff download mananger but dos it really scan because it scans fast and it takes my regular anti-virus longer to scan than ff so is it doing the job?

most likely. Firefox will only be scanning one file, whereas your AV normally scans the whole disk

ah thats what i mean wheni tell my anti virus to scan one file it takes longer than ff dose