Sounds more to me like the choice of videos you chose to download. Any video file that asks you to go to a particular site to download a trojan codec is a dud! Beware!

1. cant see the movie, __ 2. New Virus On Limewire (fastmp3player.com=Trojan / ASF.GETCODEC.AA=Trojan), __ 3. Content Blocked or wrong media player (DOM Player/3wPlayer=Trojan), __ 4. Need Program To Download? (to unlock videos) (XVOD Decoder=Spyware)

Virus thread: Typical virus spam file sizes - Make a note of them (click on blue link to see)

Movie download issues (click on blue link) (2nd last post has information on best video formats.)