AFAIK, if search results show in red, it means that the host is firewalled. Sometimes users can push through firewalls to download but sometimes not.
Are all your results showing in red? It would be pretty strange if they were (in over 2 years, I've never seen a red search result). Try searching for a popular file & see if you still see red results.

If all search results are always red, all I can think of to try is deleting your LW preferences folder when LW's closed. See points 2 & 3 below
Fixes for LimeWire

If it's only the one file that's giving these results, try searching again later. As users in other time zones log on, new files will become available & you might get lucky.
Otherwise, someone else here might have a few more clues