Update to the latest LW 4.12.3 as it stops these spammed files having that effect. http://www.limewire.com/english/content/download.shtml

If you find you're getting lots of search results such as 100 for one, 99 for the next in the results, etc. then they are probably fake results being spammed by groups such as Overpeers. Instead, choose those with 10 or 20 or so hosts from the search results under the # column.