Hey,
I had the same Java Runtime Problem just like many other people had. I fixed it, but now when I run LimeWire, and exit, It will start the program again. Here is the script from runLime.sh

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#!/bin/sh
#
# Runs LimeWire. This script must be executed in your LimeWire
# install directory.
#
# We must set the J2SE_PREEMPTCLOSE environment variable to 1 to
# work around some limitations in the JDK1.3. For more information
# see http://java.sun.com/j2se/1.3/relnotes.html#vm
#".:collections.jar:xerces.jar:jl011.jar:MessagesB undles.jar"
#
CLASSPATH=".:LimeWire.jar:collections.jar:xerces.j ar:j1011.jar"
export CLASSPATH
J2SE_PREEMPTCLOSE=1
export J2SE_PREEMPTCLOSE
java -jar RunLime.jar
cd
cd /home/jason8612/LimeWire
sh ./runLime.sh
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Jason