I initially tried in the generic directory but it didn't work.I second that. Though the generic dir is there but mozilla crashes if java plugin is linked there.
Not that it helps the people with problems, but that's exactly how I have it set up and it works perfectly with no apparant crashing.
[bevan@aurangzeb ~]> ls -al /usr/lib/mozilla-1.4.1/plugins/
total 28
drwxr-xr-x 2 root root 4096 Dec 5 10:43 .
drwxr-xr-x 9 root root 4096 Dec 6 04:04 ..
-rwxr-xr-x 1 root root 18820 Nov 14 08:03 libnullplugin.so
[bevan@aurangzeb ~]> ls -al /usr/lib/mozilla/plugins/
total 12
drwxr-xr-x 2 root root 4096 Nov 14 08:00 .
drwxr-xr-x 3 root root 4096 Dec 3 16:02 ..
lrwxrwxrwx 1 root root 64 Dec 3 18:14 libjavaplugin_oji.so ->
/usr/java/j2re1.4.2/plugin/i386/ns610-gcc32/libjavaplugin_oji.so
