I had the same problem, but when I first downloaded limewire I recieved an error message "no script engine for file extension .wsf". after that it would not initiate at all. What I discovered is that Limewire was still using a Beta version of the Java Script engine.
Check to see if you have version 1.4.0 of the Javascript, if not uninstall the version you have and go to the Javascript web site and download it. It worked for me.