Java 'red x of death' in Safari - PLEASE HELP!

Hi,
I know there's no simple fix to the Java problems in Safari, but I feel like I'm going round in circles and really need some advice from someone with more Mac knowledge than me (I'm a relative newbie).
Details of my problem:
-The Java window in a webpage shows coffeecup then moving spikes around then, finally, the red x of death in the corner. Safari is hung whilst processing this.
-this is what console log has to say about this process:
Mac OS X Version 10.4.8 (Build 8L127)
2007-03-21 12:28:16 +0000
2007-03-21 12:28:17.741 SystemUIServer[78] lang is:en
Mar 21 12:28:31 Macintosh-3 ntpdate[109]: no server suitable for synchronization found
load: class PiechartApplet.class not found.
java.lang.ClassNotFoundException: PiechartApplet.class
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:168)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:119)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:599)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:721)
at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1826)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:650)
at sun.applet.AppletPanel.run(AppletPanel.java:324)
at java.lang.Thread.run(Thread.java:613)
Caused by: java.io.IOException: open HTTP connection failed.
at sun.applet.AppletClassLoader.getBytes(AppletClassLoader.java:271)
at sun.applet.AppletClassLoader.access$100(AppletClassLoader.java:44)
at sun.applet.AppletClassLoader$1.run(AppletClassLoader.java:158)
at java.security.AccessController.doPrivileged(Native Method)
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:155)
... 9 more
-I have the following in my safari->help->installed plugins page, Java Plugin for Cocoa, Java Plugin CFM and Java Plugin (both java 1.3.1). (I have 1.3.1, 1.4.2 and the 5.0 installed, apparently.)
-Java application cache viewer says 'Cache is not configured' - ?
I've tried:
-Downloading firefox. Firefox chokes completely on the page in question and I have to quit it by hand.
-When I had this problem before, I moved com.apple.java.JavaPreferences.plist to trash, restarted, and everything then worked fine. Then I installed Maple 10, and the problem appeared again. First time it appeared, deleting this file worked again. Now the problem's appearing a third time, and it now DOESNT fix it. In fact now I have no such file at all on my system. This was the only prefs file of those suggested to be deleted in previous posts that I could find.
-I haven't tried creating a new user.
-I haven't reinstalled java since this new problem appeared (didn't fix the problem when it first occurred.)
I'm hoping that the log file especially might help someone pinpoint the precise nature of my problem... I really need to access this one particular page on a daily basis, so any suggestions at all would be hugely appreciated.
Thank you in advance,
Rebecca.
Powerbook G4 Mac OS X (10.4.8)
Powerbook G4 Mac OS X (10.4.8)

Hi,
ok...so...I can't copy the url - its a customisable page, I enter values in and up comes a pie chart.
The problem isn't the site, anyway - no java webpages work. The problem is definitely caused by Maple 10. Maple crashes, I lose java. I fixed this problem yesterday by trashing com.apple.java.JavaPreferences.plist and another file that randomly appeared, JavaConfig.plist. Now it doesnt work again.
Short of ditching maple (and harassing their tech support) - any suggestions?
Thanks.
Powerbook G4 Mac OS X (10.4.8)

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