I was having a hard time clearing out the search filter within Limewire 4.0.3 until I found the file I needed to delete which carries your search data.

To clear the search filter within LIMEWIRE perform the following procedures:

1. Close Limewire
2. Open "My Computer"
3. Go to: C:\Program Files\Limewire\Incomplete
4. Right Click and delete any file called "downloads.dat"
5. Close all windows.
6. Empty Recycle Bin.

Hope this helps all of you - I know I was getting pretty ticked until I figured out how to clear this out. I tested it several times also to ensure this is a good fix and it is.

Take it light,
Keith

Thanks. I had the same problem, which you have now solved!!

actually, the downloads.dat and its backup (downloads.bak) contain the incomplete file information (alternate sources, map/index of pieces completed/pending . . . ). If deleted, all the incomplete files become useless.

The search history
-can be turned off in the options (uncheck the "autocomplete" option),
-is not saved to the hard drive,
-resides in memory, so is flushed whenever LW ends a session.
-is lost when changing themes (btw--this may be a bug that will be corrected)

cheers