Actually when i originally installed this linux build i did not select to install kaffe. I upgraded my previous version of java to the developer version java 1.4.0_01 (which is the current release from Sun Microsystems). Here's the info that you requested. But for some reason i think there a problem with the language class definitions in the limewire install script.

java -version

java version "1.4.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0_01-b03)
Java HotSpot(TM) Client VM (build 1.4.0_01-b03, mixed mode)

which java

/usr/java/j2sdk1.4.0_01/jre/bin/java