erreur segmentation java

1 je debut sous linux ( mandriva 2007)
2 au debut j'avais du mal a installer java ( je suis tjs pas sur qu il est bien installer :s)

3 voici les probleme rencontrer pour demarrer une appli. java

3.1 avec Mercury:

[cedric@localhost ~]$ Mercury
/usr/bin/Mercury: line 16: 6076 Erreur de segmentation java -Djava.library.path=jni/linux:jni/linux/jmf -classpath $classpath com.dMSN.Main
[cedric@localhost ~]$

3.2 avec limewire:

[cedric@localhost ~]$ limewire
Starting LimeWire...
Java exec found in PATH. Verifying...
Suitable java version found [java = 1.4.2]
Configuring environment...
Loading LimeWire:
runLime.sh: line 109: 6147 Erreur de segmentation ${JAVA_PROGRAM_DIR}java -Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.NoOpLog -Djava.library.path=. -jar LimeWire.jar

******************************************************************
Something went wrong with LimeWire.
Maybe you're using the wrong version of Java?
(LimeWire is tested against and works best with with Sun's JRE, Java 1.4+)
The version of Java in your PATH is:
java version "1.4.2"
JamVM version 1.4.3
Copyright (C) 2003-2006 Robert Lougher <rob@lougher.org.uk>

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2,
or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

[cedric@localhost ~]$

4. je sais pas si je suis dans la bonne partie ( je debute ) deso
5. merci d'avance ( sa m mencouragerais a garder linux)