Nah to risky to touch just incase it does more harm than good...
We will try another way...
Delete limewire's preference folder, hopefully that will get you back into limewire and you may be able to delete (what you may recall) the last few downloads...
This sticky will explain how to delete the preference folder/s...
Fixes for Limewire when LW isn't operating as it should LimeWire Pref Folder in Vista