It could be the License warning thing.
Just have a look,
Go, Tools/Options/Searching/Basic, it says, "Show License Warning"
Untick the box if you don't want to filter out copyright Files in search results.

This option is enabled at setup, The choice is your decision.
Do a test to see if search results improve.
You can reverse this change at any time, the choice is yours.

P.S. A file that requires a license, is protected so if you obtain a license, that file cannot be shared.
So don't put those files in your shared folder.
That will cause more frustration to others as they play only silence.

If that don't fix it, delete your Limewire folder in C:\Your User account\docs & setts\Application data L/W should reset its self.
Peace.

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mickjapa108