Having the same problem, also running XP. Worked great until the last LW version upgrade (I use Pro). Installed the latest Java Runtime (1.4) from Sun, still no dice. Thinking about un/reinstalling LW. Here's a snippet of my error:

java.util.MissingResourceException: Can't find resource for bundle java.util.PropertyResourceBundle, key STATS_CONNECTION_TITLE
at java.util.ResourceBundle.getObject(Unknown Source)
at java.util.ResourceBundle.getString(Unknown Source)