Hello François, I think it depents on which architecture you are running on. If it is on x86_64, then things seem to be a bit complicated. In my case, I have 2 FF kits installed: # rpm -q --qf '%{NAME}-%{VERSION}-%{RELEASE}.%{ARCH}\n' firefox firefox-2.0.0.9-1.fc8.x86_64 firefox-2.0.0.9-1.fc8.i386 Normal call of "/usr/bin/firefox" usually calls the x86_64 variant of it. Unfortunately, there is no x86_64 variant of the SUN JRE Moz/FF Java plugin, so the idea is to use the "nspluginwrapper" which allows the i386 SUN JRE Java Plugin to be used by the x86_64 FF. The command to make this work is "mozilla-plugin-config -i". Interestingly enough, I also have 2 variants of "nspluginwrapper" installed and I don't know if this is supposed to be "automagic" . . . obviously not, since I can't get the SUN JRE Plugin to run under FF 2.0.0.9. - Maybe somebody else has an idea? Best Regards, Arnold