I recently downloaded a couple third party free downloads for some video editing I'm working on. I'm concerned because, I'm a new Mac user and this computer was a significant investment for me. The Programs that I specifically downloaded were 1.HandBrake 2.VLC media player 3. Squared 5: Mpeg Streamclip. Are there any known viruses, spyware, or trojans associated with any of these applications? Additionally I also downloaded a document converter for Office Mac and Divx media player; same question any known viruses,Spyware,trojans for those. That's ultimately all the freeware downloads I've installed on my computer. I don't have an antivirus for my mac, and I don't download torrents or Limewire music. I suppose I'm just overprotective of my mac, but It's a great machine and I don't want to get off to a bad start with viruses and the sort. Thanks to any and everyone who help.