Anybody out there seen ATI SVCD capture do this?

After capture, the files appear to play back ok, however, if you use the slider on any of my players to advance the video, or the sliders in ulead vid stud 5, the still picture that appears looks like it has had a lot of little square holes randomly cut in it with another image underneath. Further, this image will remain in the playback window, and the counter will resume but no motion. If I wait long enough, the video resumes, but it makes editing almost impossible. Now, it doesn't do this all the time, so something is weird.

I've looked all over this site, ATI's site(what a joke) and have found nothing that sounds like what's happening. So, if anyone can help you will be a Super Hero!

Thanks,
Tom