There are fake files throughout the network, these will sit connecting for ages & then eternally need more sources.
Check files with Bitzi before download. If other users have rated the file, you'll get an idea of the content & quality. If a movie has heaps of sources but no Bitzi rating...chances are it's a fake
Check out the threads below for info & tips (including how to use Bitzi).
Fake files showing up in search results
How to find music (tips for movies also)