Firefox 3.0.1 java plugin links don't work
I have a few machines with 32-bit Scientific Linux 4, which is a clone of RHEL 4. Recently they updated themselves to version 4.7, which includes Firefox 3.0.1. I made the usual links to the Java plugin, but Firefox doesn't see it. Java is enabled, but about:plugins doesn't show Java.
The plugin is
/usr/java/jre1.5.0_07/plugin/i386/ns7/libjavaplugin_oji.so. I know, it's an old version. I made links in /usr/lib/firefox-3.0.1/plugins, /usr/lib/mozilla/plugins and ~/.mozilla/plugins.
Has something changed in 3.0.1?