Ok a couple of things you can try...
Uninstall your Java from the add/remove programs and then re-install the JRE 5.11 offline version....(4th one down)
Java SE Downloads - Previous Release - JDK 5
If that does not help with your problem try deleting your preference folder...
Fixes for Limewire when LW isn't operating as it should
Still no luck...Who is your ISP..(Who do you pay to have your internet ??)