First I just want to confirm what os your using, Vista or XP?

There are other things to try. I seem to remember someone posting that changing to the "Metal" skin sometimes helps. You could also try updating your java and deleting your preference folder and changing LW's compatibility mode.

See: Fixes for Limewire when LW isn't operating as it should

LimeWire Pref Folder in Vista

There may be something in this post that'll help: Black screen

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