I was downloading what seemed to be a great copy of Evil Dead, probably a rip, that I had previewed early in the download.
All seemed fine so I continued to download to 90% finished before deciding to watch some of it.
Well after AVI Preview finished, it showed only about 8 minutes worth.
Someone released what seems to be a file with movie-length data but only ~15 minutes worth of the movie.
Oh well. Back to searching. The first copy I tried the audio and video were out of sync.