I remember a few months ago this happend to me as well. I usually re-search when the search ends and the files I want aren't there -- especially if I just logged on and the number of users is building. After 10 re-searches or so (for a 20mb file), 8 files named what I was searching for popped up from the same user, all with file sizes of 68k or something.

I dont' know why Limewire or Gnutella monitors and lists the searches for everyone to see. This feature should be abandoned.