When running applets in Java Plug-in 1.4b88, running applets in the following URL:

http://library.thinkquest.org/2647/cooljava/testmand.htm

The web server is redirecting the request from http://library.thinkquest.org/2647/media/EDU/IMO/MAJE/MAJE.class to http://www.thinkquest.org/library/lib/site_sum_outside.html?tname=2647&url=2647/media/EDU/IMO/MAJE/MAJE.class, but Java Plug-in fails to recognized

java.lang.SecurityException: illegal URL redirect at sun.plugin.net.protocol.http.HttpUtils.followRedirects(HttpUtils.java:65) at sun.plugin.cache.CachedFileLoader.download(CachedFileLoader.java:232) at sun.plugin.cache.CachedFileLoader.load(CachedFileLoader.java:96) at sun.plugin.cache.FileCache.get(FileCache.java:148) at sun.plugin.net.protocol.http.HttpURLConnection.connectWithCache(HttpURLConnection.java:208) at sun.plugin.net.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:144) at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:314) at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:1137) at sun.net.www.protocol.http.HttpURLConnection.getResponseCode(HttpURLConnection.java:1151) at sun.applet.AppletClassLoader.getBytes(AppletClassLoader.java:225) at sun.applet.AppletClassLoader.access$100(AppletClassLoader.java:43) at sun.applet.AppletClassLoader$1.run(AppletClassLoader.java:144) at java.security.AccessController.doPrivileged(Native Method) at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:141) at sun.plugin.security.PluginClassLoader.findClass(PluginClassLoader.java:191) at java.lang.ClassLoader.loadClass(ClassLoader.java:309) at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:115) at java.lang.ClassLoader.loadClass(ClassLoader.java:265) at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:476) at sun.applet.AppletPanel.createApplet(AppletPanel.java:551) at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1626) at sun.applet.AppletPanel.runLoader(AppletPanel.java:480) at sun.applet.AppletPanel.run(AppletPanel.java:293) at java.lang.Thread.run(Thread.java:539)

Steps to reproduce:
- Open the browser and goto the URL, exception will be thrown.

It seems like the HTTP/HTTPS redirection is not handled properly in Java Plug-in. This problem occurs in IE/NS on all platforms , and it causes several applet compatibility tests to fail.