By the way did you see the post about Norton IS 2005 at the bottom of the above link about config norton? It leads onto a thread what describes how.

You are unlikely to have the development version of Java, it's very large. Some of your browsers may require Java 1.3. But all the same, uninstall it using add/remove programs control panel & install the new version. Also delete your LW Prefs folder; instructions here: Fixes for Limewire