Try deleting your limewire preference folder...
Fixes for Limewire when LW isn't operating as it should
Also you could try the JRE 5.11, it seems to be the most stable for many users...
Uninstall 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