I currently have two of the 43G DVR’s that have been brought back by our customers, the two units have the exact same problem. The picture on every channel regardless of camera used or location, rolls. The video feeds all roll like a vertical sync issue that used to occur on old tv’s. This problem will occasionally be resolved by repeated reboot’s of the units however the next time the unit restarts the issue returns. The problem occurs regardless of the VGA output or BnC outpout being used.