Items in red have lost their link to the files in the dwnld window. (one reason is if you kill the dwnld from the dwnld window, another is if the dwnld decides to dwnld from another source & loses its link & recognition of the original.) There's more than one way to enable the incomplete items in red recontinue. 1st is to do a search for that item & reselect it to dwnld. If it doesn't continue dwnlding from where it left off (eg-60% dwnlded), then kill that dwnld & select another from another source until it does continue. The other last resort, is to force resume, the problem with that is it needs to have the resources available for it to continue.
It's a bit of an issue with LW that when you do a search for an item, not all search results are grouped together despite having the same name & size. This is an issue that future versions of LW will refine upon as Java & the Gnutella network develops & improves. However in the meantime, you can be dwnlding an item & end up having 2 or more items of the same name in red in the incomplete folder. My suggestion is to just dwnld from whichever one you can, & then delete the others of the same name in the incomplete folder 'after' you've successfully finished dwnlding 'one' of these.

If you'd like a more detailed description of the problem see this thread (not easy reading): http://www.gnutellaforums.com/showth...threadid=26449