Thanks in no small part to these forums I converted my DVD collection (and a good portion of my TV-DVD collection) over to my computer for my Apple TVs. When I finally completed this huge chore I went out and got three 1.5TB internal drives to replace the six externals that I had. I don't THINK the problem started when I got the new drives, since I didn't watch too much on the computer itself too often. But I have been watching a lot of junk on the computer lately, and I noticed that every few seconds the video hiccups. Not the audio, just the video. It's a small hiccup, but it is noticeable and therefore annoying. I'm realllllly hoping it's not the drives, as that would completely suck. Is there anything else it could be? This happens regardless of what else is running in the background. The specs are in my sig. The drives are 1.5TB 7200 RPM drives. Any input at all would be awesome. EDIT - It seems that it hiccups in quicktime/iTunes, and not in VLC.... which I think rules out the computer and the files themselves. Could Perian be causing jumpy playback?