Please don't double-post & keep all your posts on one topic to the one thread. I've merged two of them here.

Why use Norton Firewall? Many OSX users don't even bother using a firewall. If any, they use the OSX firewall. To find what your problem is, why not disable Norton firewall & then try opening LW. If LW opens, then we know the problem is with Norton. If not, then the problem must lie somewhere else.

What OSX version are you using? Which Java version?