You are the first I have seen or heard of with this problem. This would be a Java problem my guess is a conflict with another program but I have no Idea what program. You probably should go to the Java Forum and ask this question since this is a Java problem not a LimeWire problem. People there would be more likely to know the answer or be able to work it out.
http://forum.java.sun.com/forum.jspa?forumID=32