[Bug 603873] [NEW] Java plugin does not work after firefox upgrade to 3.6.6

[miguelquiros]

Public bug reported:

Binary package hint: firefox-3.0

This bug appears as a branch of bug 600158, where I was told to separate
Flash and Java issues. This new bug is related to Java plugin. After
upgrading firefox from 3.0.19 to 3.6.6, the java plugin does not work
any more. The simlinks in /etc/alternatives point correctly to file
libnpjp2.so as indicated in bug 600642 and the plugin shows up in
about:plugins, so it seems to be correctly installed and the subject of
this bug is then different of 600642.

After trying to load any page containing a java applet, the applet does
not work. For example at www.java.com, if I click in "Do I have Java?"
and then "Verify Java Version", the java console opens with this series
of errors:

java.lang.ClassCastException: sun.awt.motif.MToolkit cannot be cast to sun.awt.X11.XToolkit
	at sun.awt.X11.XEmbeddedFrame.addNotify(XEmbeddedFrame.java:53)
	at sun.plugin2.main.client.PluginEmbeddedFrame.addNotify(PluginEmbeddedFrame.java:46)
	at sun.awt.X11.XEmbeddedFrame.<init>(XEmbeddedFrame.java:43)
	at sun.awt.X11.XEmbeddedFrame.<init>(XEmbeddedFrame.java:60)
	at sun.plugin2.main.client.PluginEmbeddedFrame.<init>(PluginEmbeddedFrame.java:37)
	at sun.plugin2.main.client.PluginMain$StartAppletRunner.run(PluginMain.java:929)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
PluginMain: could not create embedded frame

The applet tries it three times before giving up and does not display
the expected information.

I am using hardy
firefox is 3.6.6+nobinonly-0ubuntu0.8.04.2
sun-java6-plugin is 6.20dlj-0ubuntu1.8.04.1

This plugin worked fine before firefox update.

** Affects: firefox-3.0 (Ubuntu)
     Importance: Undecided
         Status: New

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Java plugin does not work after firefox upgrade to 3.6.6
https://bugs.launchpad.net/bugs/603873
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