Segfaults using IBM java. Anybody got any clues???

[James Gunning]

Hi folks;
	with a yellowdog 2.1 install, and kernel 2.4.18-0.6a;

I keep getting segfaults from the IBM java IBMJava2-SDK-1.3.1-0.0. 
Anybody have any clues what this might be. 
The machine is a G3 powerbook. For comparison, the
IBM java rpms seem to work fine on a G4 I have.

Here's the end of the dump from 
/opt/IBMJava2-ppc-131/bin/java -verbose
...


[Loaded java.util.Hashtable$Entry from
/opt/IBMJava2-ppc-131/jre/lib/rt.jar]
[Loading superclasses of java/util/Hashtable$Entry]
[Loaded java.util.Map$Entry from /opt/IBMJava2-ppc-131/jre/lib/rt.jar]
[Loading superclasses of java/util/Map$Entry]
[Loaded java.lang.ThreadGroup from /opt/IBMJava2-ppc-131/jre/lib/rt.jar]
[Loading superclasses of java/lang/ThreadGroup]
[Preparing java/lang/ThreadGroup]
[Loaded java.lang.System from /opt/IBMJava2-ppc-131/jre/lib/rt.jar]
[Loading superclasses of java/lang/System]
[Preparing java/lang/System]
[Initializing java/lang/System]
[Running static initializer for java/lang/System]
[Loaded java.lang.ExceptionInInitializerError from
/opt/IBMJava2-ppc-131/jre/lib/rt.jar]
[Loading superclasses of java/lang/ExceptionInInitializerError]
[Preparing java/lang/ExceptionInInitializerError]
[Signaling in VM: java/lang/NoClassDefFoundError, message:
java/lang/System]
        at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:292)
        at java.lang.Thread.init(Thread.java:293)
[Signaling in VM: java/lang/NoClassDefFoundError, message:
java/lang/System]
        at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:292)
        at java.lang.Thread.init(Thread.java:293)
        at java.lang.Thread.<init>(Thread.java:418)
Segmentation fault


Any clues?
	James.