Having used WinDV without any problem nor dropped frames previously, I'm now suddenly unable to capture a "clean" image on my hard drive. The captured images present blocky artifacts (see enclosed sample), for which I'm unable to find a solution. Capturing is performed from Source (VTR) over Sony DVCAM DSR-11 (for on-the fly digitizing) to HD via FireWire. As said previously this has always worked flawlessly before. Any suggestion as how to solve this problem would be welcome! Thx.