(warning: this thread has become extremely Mozilla-centric at this point)

Mozilla 1.0 under which platform?
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020607

release or nightly build?
1.0 release

Under Edit->Preferences->Advanced, do you have "Enable Java" selected?
yes

Below that, under Scripts & Plugins, what do you have en-/dis-abled?
all enabled

Are you using the Java plugin?
yes: /usr/java/j2sdk1.4.0/jre/plugin/i386/ns610/libjavaplugin_oji140.so (linked from ~/.mozilla/plugins/libjavaplugin_oji140.so)

Which Java VM version?
Java 2 SDK 1.4.0

When this happens, if you try Tools->Web Development->Java Console, do you see anything?
Yes, the Java Console pops up.

Does Mozilla still function at this point, or does it appear frozen?
Seems to be working fine... I went to Java Chatterbox and saw this come up in the Java Console:

Launcher.findRootURL(): getDocumentBase is: http://perlmonks.org/index
+.pl
Launcher.findRootURL(): urlE2root: http://perlmonks.org/index.pl
[download]

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"A Jedi uses the Force for knowledge and defense, never for attack."