I have the same problem.

Bought Pro a couple of hours ago - everything working fine to start with.

Machine locked up during a few downloads, hit reset, and now no search results (though the counter showing # of search results increments)

This is 2.3.3 Pro on XP. I know of this issue affecting earlier versions, but it was apparently fixed in 2.2

LW - resolve this or I'll be hassling you for my money back.