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Try this to fix the dark screen thingie:
1. Update your Java. Use the JRE offline installer & remove your current Java version before you install the new one.
http://java.sun.com/javase/downloads/index.jsp 2. Delete LW's preferences folder when LW's properly closed. See points 2 & 3 below. This will kill all of your settings within options, you'll have to go back through & reset things afterwards.
Fixes for LimeWire