I teach Tv in a high school. 90 kids are using 3 GL-1s, one XL-1, a couple of Panasonic EZ30s and two of the latest panasonic EZ (50"s?). All 3 chip mini-dv cameras. I've had pixel and tracking problems since the first year. (3 years ago for the canons.) I've sent them back to factory to be readjusted, etc. Here are a few things I've discovered: (1) Breaking the control track by turning the camera on and off during the same shoot causes pixel/tracking problems. Leave the camera on if possible for all the same shoot. (2) Do NOT take the tape out of the camera until you have captured the video to the computer. This pretty much eliminates that problem. Trying to replay a tape which has been out of the camera for any period of time is RISKY. NOW, I will say that I haven't had the problem with the panasonics. (There are other things I don't like about them.) (3) Can't usually play tapes successfully recorded in one camera and played in another. Canon is always **puzzled** when I call them about theproblem--as if I'm the only one in the world to have pixel troubles. BOTTOM LINE: Don't try to store anything important on mini-dv tape.