Hi there
Can't say I ever heard of your distro before, but do not let that fool you since it is pretty standard fare, no matter what distro you run.
See, Firefox, as a mozilla based application, needs a link to the JRE in order to work.
cd ~/.mozilla/plugins
ln -s /usr/java/jre1.5.0_11/plugin/i386/ns7/libjavaplugin_oji.so .
Two notes for the above
1: You may have a different architecture, so choose yours from the available
2: The location where you installed the JRE may be different from mine. To find out where yours got installed, issue:
updatedb
locate libjavaplugin_oji\.so
The backslash is necessary to prevent the dot from being misinterpreted.
After all that, restart your Firefox by closing *all* windows first, including, but not limited to, the download window.
Type in google: test java and enjoy the wonders of Just In Time compilation technology