[ubuntu-in] Java doesn't work in Firefox

[Satish Chandra]

I'm using Ubuntu Karmic 64 bit version. Java isn't working in Firefox.
The applets either don't show up or are shown as a grey box. Sometimes
Firefox hangs when the page has Java applets.

I installed the latest JRE from java.com and am using libnpjp2.so from
it. I can see the Java plugin in about:plugins (Java(TM) Plug-in
1.6.0_17).

I tested in Chrome and Opera and Java works fine in them. Does anyone
know what could be the problem?

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Regards,
Satish