I use Ulead DVD MovieFactory to capture and VV3 to edit & render. The captured file is perfect. However, recently I noticed that when viewing the rendered video file, I get a black/blank frame every few minutes. Any ideas on what might be causing this? I have a P4 2.4GHz with 1GB RAM and 4 80GB 7200RPM IDE Drives in a striped RAID array. OS is Win XP Pro.