Restored OS/400 V5R2M0 & now hava Java problems!

Hello,
 
My ops guys have just restored OS/400 V5R2M0 to a new box (SAVSYS & SAVLIB 
*NONSYS etc.), now when I try & run any java app (from QSH or RUNJVA) including 
starting up Websphere V5 (native_stderr.log) I get this error:
 
java.lang.UnsatisfiedLinkError
      java/lang/Throwable.<init>()V+4 (Throwable.java:73)
      java/lang/Error.<init>()V+1 (Error.java:32)
      java/lang/LinkageError.<init>()V+1 (LinkageError.java:24)
      java/lang/UnsatisfiedLinkError.<init>()V+1 (UnsatisfiedLinkError.java:23)
      java/util/zip/ZipFile.<init>(Ljava/io/File;I)V+85 (ZipFile.java:105)
      java/util/jar/JarFile.<init>(Ljava/lang/String;)V+9 (JarFile.java:52)
      
sun/misc/URLClassPath£JarLoader.getJarFile(Ljava/net/URL;)Ljava/util/jar/JarFile;+50
 (URLClassPath.java:496)
      
sun/misc/URLClassPath£JarLoader.<init>(Ljava/net/URL;Ljava/net/URLStreamHandler;Ljava/util/HashMap;)V+36
 (URLClassPath.java:462)
      sun/misc/URLClassPath£2.run()Ljava/lang/Object;+82 (URLClassPath.java:253)
      
sun/misc/URLClassPath.getLoader(Ljava/net/URL;)Lsun/misc/URLClassPath£Loader;+9 
(URLClassPath.java:242)
      sun/misc/URLClassPath.getLoader(I)Lsun/misc/URLClassPath£Loader;+65 
(URLClassPath.java:219)
      
sun/misc/URLClassPath.getResource(Ljava/lang/String;Z)Lsun/misc/Resource;+25 
(URLClassPath.java:132)
      java/net/URLClassLoader£ClassFinder.run()Ljava/lang/Object;+24 
(URLClassLoader.java:594)
      java/net/URLClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;+16 
(URLClassLoader.java:195)
      java/lang/ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+41 
(ClassLoader.java:300)
      java/lang/ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+21 
(ClassLoader.java:293)
      
sun/misc/Launcher£AppClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+33
 (Launcher.java:281)
      java/lang/ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;+1 
(ClassLoader.java:256)
      
java/lang/ClassLoader.loadClassInternal(Ljava/lang/String;)Ljava/lang/Class;+1 
(ClassLoader.java:316)
Java program completed with exit code 1
 
5722JV1 LICPGM options are not in error & if I try & run an app specifying the 
previous JDK to use (java -Djava.version=1.2 appname) it runs fine, it seems to 
be a problem only with JDK 1.3 (my default JDK).
 
 
Thanks in advance for any help.... Andy P.