I've noticed more than several times especially when downloading video files that the completion percentage/size of file downloades will go back down, go up again and down and never complete. Anyone know why? Usually when this happens I'm downloading from about 8 users.

Check out this thread for more info: http://www.gnutellaforums.com/mac-os...os-10-5-a.html
Don't worry if you're not using a Mac, it's just general info.

Have you checked the file(s) with Bitzi? Other users might have rated the file & said whether they've had the same kind of issue: How to use Bitzi