I saw the other thread about making Firefox behave like it does in windows, and thought I would share this tip.
The latest Java Runtime Environment (JRE) from Sun is now compatible with 64bit Linux and Firefox (it wasn't always the case). Here are the steps:
1. install the latest 64bit JRE from Sun. currently, this is version 1.6.0 update 14
2. find the firefox java plugin library file named libnpjp2.so. this is usually at:
/usr/java/jre1.6.0_14/lib/amd64/libnpjp2.so
3. create a symbolic link from the 64bit mozilla/firefox plugin directory to the java plugin library file:
# ln -s /usr/java/jre1.6.0_14/lib/amd64/libnpjp2.so /usr/lib64/mozilla/plugins/libnpjp2.so
4. now restart firefox. to verify the java plugin is working, type "about

lugins" in the URL address bar and hit enter. you should see a list of installed plugins, so look for Java.
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