Try these fixes...
Try uninstalling your Java from the add/remove programs and then re-install the JRE 5.11 offline version....
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11
If that does not help with your problem try deleting your preference folder...
Fixes for Limewire when LW isn't operating as it should
Let me know how you get on with that..
