On my about:plugins, I have the following for Java and Flash:
What does your's show?

Shockwave Flash

File name: libflashplayer.so
Shockwave Flash 9.0 r124

MIME Type Description Suffixes Enabled
application/x-shockwave-flash Shockwave Flash swf Yes
application/futuresplash FutureSplash Player spl Yes
Default Plugin

File name: libnullplugin.so
The default plugin handles plugin data for mimetypes and extensions that are not specified and facilitates downloading of new plugins.

MIME Type Description Suffixes Enabled
* All types .* No
Java(TM) Plug-in 1.6.0_11-b03

File name: libjavaplugin_oji.so
Java(TM) Plug-in 1.6.0_11

MIME Type Description Suffixes Enabled
application/x-java-vm Java Yes
application/x-java-applet Java Yes
application/x-java-applet;version=1.1 Java Yes
application/x-java-applet;version=1.1.1 Java Yes
application/x-java-applet;version=1.1.2 Java Yes
application/x-java-applet;version=1.1.3 Java Yes
application/x-java-applet;version=1.2 Java Yes
application/x-java-applet;version=1.2.1 Java Yes
application/x-java-applet;version=1.2.2 Java Yes
application/x-java-applet;version=1.3 Java Yes
application/x-java-applet;version=1.3.1 Java Yes
application/x-java-applet;version=1.4 Java Yes
application/x-java-applet;version=1.4.1 Java Yes
application/x-java-applet;version=1.4.2 Java Yes
application/x-java-applet;version=1.5 Java Yes
application/x-java-applet;version=1.6 Java Yes
application/x-java-applet;jpi-version=1.6.0_11 Java Yes
application/x-java-bean Java Yes
application/x-java-bean;version=1.1 Java Yes
application/x-java-bean;version=1.1.1 Java Yes
application/x-java-bean;version=1.1.2 Java Yes
application/x-java-bean;version=1.1.3 Java Yes
application/x-java-bean;version=1.2 Java Yes
application/x-java-bean;version=1.2.1 Java Yes
application/x-java-bean;version=1.2.2 Java Yes
application/x-java-bean;version=1.3 Java Yes
application/x-java-bean;version=1.3.1 Java Yes
application/x-java-bean;version=1.4 Java Yes
application/x-java-bean;version=1.4.1 Java Yes
application/x-java-bean;version=1.4.2 Java Yes
application/x-java-bean;version=1.5 Java Yes
application/x-java-bean;version=1.6 Java Yes
application/x-java-bean;jpi-version=1.6.0_11 Java Yes
Scalable Vector Graphics

File name: libmozsvgdec.so
Scalable Vector Graphics, as handled by RSVG-2.22.3. Views SVG images.

This is alpha software. It will probably behave in many situations, but may also ride your motorcycle, drink all your milk, or use your computer to browse porn. Comments, feature requests, and patches are welcome.

See http://librsvg.sourceforge.net/ for information.

MIME Type Description Suffixes Enabled
image/svg+xml Scalable Vector Graphics svg,svgz Yes
image/svg-xml Scalable Vector Graphics svg,svgz Yes
image/svg Scalable Vector Graphics svg,svgz Yes
image/vnd.adobe.svg+xml Scalable Vector Graphics svg,svgz Yes
text/xml-svg Scalable Vector Graphics svg,svgz Yes
Shockwave Flash

File name: libflashplayer.so
Shockwave Flash 10.0 r15

MIME Type Description Suffixes Enabled
application/x-shockwave-flash Shockwave Flash swf Yes
application/futuresplash FutureSplash Player spl Yes


as you can see...i have installed the sun java machine ...but to no avail..

with the original its the same....

no working site on win2day...

Hello!

I too am having problems with some Java applications. Interestingly though, this is only when I run as a user. When I run firefox as root, things work better.

Murdock