Short desc:
   6u34 b03 fails to run applet that requests 1.4.2_XX JRE with exception:

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basic: Plugin2ClassLoader.addURL parent called for http://vice.russia.sun.com/newroot/testsuites/160_int_ws/deployment/src/plugin/MultiJRE/MultiJRE/classes/142/MimetypesUnsigned.jar
basic: exception: java.net.URL.toURI()Ljava/net/URI;.
exception: java.net.URL.toURI()Ljava/net/URI;.
java.lang.NoSuchMethodError: java.net.URL.toURI()Ljava/net/URI;
at com.sun.deploy.security.DeployURLClassPath.addURL(Unknown Source)
at java.net.URLClassLoader.addURL(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.addURL(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.addURL(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.addURL(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.addJar(Unknown Source)
at sun.plugin2.applet.Applet2Manager.loadJarFiles(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception: java.lang.NoSuchMethodError: java.net.URL.toURI()Ljava/net/URI;

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Looks like CR 7119269 causes this issue.