Wow, we are getting nowhere very fast...
What are the permissions on this:
/usr/java/j2sdk1.4.1_02/jre/plugin/i386/ns600/libjavaplugin_oji.so
Also, notice how it's pointing to ns600 instead of 610, you might consider trying to point to the newest one (ns is netscape, 600 is 6.0 is my guess, and 610 is 6.1 and so on...)
Cool