Did you reinstall a version of LW that you've used before, or did you update to a newer version? Which version are you using?

Even though there are no column headers during a search, do search results show up at all?

Are you having any graphics problems with other programs? Have a look at this thread...even though the blank screen problem there's a little different to yours, maybe something will help?
http://www.gnutellaforums.com/window...w-i-fixed.html