SegFault for applets when accept_languages empty and javascript disabled

[Kiri]

Firefox or the plugin crashes with Segmentation fault when using icedtea6-plugin
    running the applet available at http://www.javatester.org/
    and the following settings are set
user_pref("intl.accept_languages", "");
user_pref("javascript.enabled", false);

Test was done with only these 2 preferences in the prefs.js .

Versions tested from the typical repositories:
icedtea6-plugin 6b18-1.8-0ubuntu1
sun-java6-plugin 6.20dlj-1ubuntu3
firefox 3.6.3+nobinonly-0ubuntu4

Not tested is:
    using the standalone applet viewer (because I forgot what program it is)

[Matthias Klose (doko)]

please could you recheck:
 - remove the sun-java6-plugin package
 - install the openjdk-6 and icedtea6-plugin packages from
   deb http://ppa.launchpad.net/openjdk/ppa/ubuntu lucid main
- restart the browser and recheck

[Launchpad Janitor (janitor)]

[Expired for openjdk-6 (Ubuntu) because there has been no activity for 60 days.]

[Kiri (kiri)]

I did. It reproduces the error every time.

[Launchpad Janitor (janitor)]

[Expired for openjdk-6 (Ubuntu) because there has been no activity for 60 days.]