Check that LW is not still running in your processes in you Task Manager first..(ctrl>Alt>delete)...If it is end the process, if it's not try these fixes...
Try uninstalling your Java from the add/remove programs and then re-install the JRE offline version....(5th one down)
Java SE Downloads - Previous Release - JDK 5
Then uninstall Limewire using the uninstaller which is found in start > all programs > limewire...then re-install it using the offline installer...
http://www.limewire.com/english/cont...oadfree2.shtml
If that does not help with your problem try deleting your preference folder...
Fixes for Limewire when LW isn't operating as it should