OK Alpha.
If you got LimeWire Pro from the offical site, you can update to the latest version free so Use this link to update.
Download it first, Dont install it yet. n use the off line installer.
http://www.limewire.com/
First! close L/W completly, Tray included then Go,
START/My Computer/local disc C:/ Documents & settings/Your User Name/Application Data
Now Delete the LimeWire Folder.
If you cant find Application Data Folder,GO to Tools/folder Opions,& tick,show hidden folders,
You can put the setting back afterwoods to protect your computer.
note: You will have to reset your, Tools/options in L/W Later.
Try that man n get back.
Peace.