This terminal jargon doesn't mean much to me but I'll paste it at the end of this message. Ever since doing the last security update on OS 10.3.8 I have been unable to connect with any Gnutella programs. I tried flex, and it just opens and closes . Any suggestions? Is it a new JAVA issue?
Here is the terminal info:

Last login: Mon Mar 28 22:52:42 on ttyp1
Welcome to Darwin!
/Applications/Net\ Apps/Phex.app/Contents/MacOS/Ja[MACG4:~] erolsomm% /Applications/Net\ Apps/Phex.app/Contents/MacOS/JavaApplicationStub; exit
[JavaAppLauncher Error] CallStaticVoidMethod() threw an exception
Exception in thread "main" java.lang.UnsupportedClassVersionError: phex/Main (Unsupported major.minor version 48.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :488)
at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:106)
at java.net.URLClassLoader.defineClass(URLClassLoader .java:243)
at java.net.URLClassLoader.access$100(URLClassLoader. java:51)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 190)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:183)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 94)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:288)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 50)
at java.lang.ClassLoader.loadClassInternal(ClassLoade r.java:310)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at apple.launcher.LaunchRunner.loadMainMethod(LaunchR unner.java:55)
at apple.launcher.LaunchRunner.run(LaunchRunner.java: 84)
at apple.launcher.LaunchRunner.callMain(LaunchRunner. java:50)
at apple.launcher.JavaApplicationLauncher.launch(Java ApplicationLauncher.java:52)
[Process completed]logout