There are no LimeWire - moderators. And posting ip addresses is not really helpful, since you don't know if it's dynamic, and by blocking it, all you'd do is deny all incoming connection attempts by this host.

Moreover, you don't really know whether this host was spreading a contaminated file on purpose or just by accident. Maybe the person behind that host didn't have time to check the file yet, or it is too dumb to use a virus scanner.