What does it mean when some files show a red color under the incomplete folder?

This might give a few clues: http://www.gnutellaforums.com/showth...&highlight=red
Basically it means your incomplete files in red have lost their association with the original source for some reason. You might have another incomplete created in its place from another source. It is possible to restart such files using the force resume function from the library, but it's best to search for the topic 1st.

thanks yeah i ended up figuring it out.