Comment 18 for bug 440478

on a freshly installed ubuntu machine:

ubik@ubik-laptop:~$ uname -a
Linux ubik-laptop 2.6.31-16-generic #52-Ubuntu SMP Thu Dec 3 22:00:22 UTC 2009 i686 GNU/Linux
ubik@ubik-laptop:~$ firefox -version
Mozilla Firefox 3.5.5, Copyright (c) 1998 - 2009 mozilla.org
ubik@ubik-laptop:~$ java -version
java version "1.6.0_15"
Java(TM) SE Runtime Environment (build 1.6.0_15-b03)
Java HotSpot(TM) Client VM (build 14.1-b02, mixed mode, sharing)

ubik@ubik-laptop:~$ dpkg -l | grep java
ii java-common 0.30ubuntu5 Base of all Java packages
ii sun-java6-bin 6-15-1 Sun Java(TM) Runtime Environment (JRE) 6 (ar
ii sun-java6-jre 6-15-1 Sun Java(TM) Runtime Environment (JRE) 6 (ar
ii sun-java6-plugin 6-15-1 The Java(TM) Plug-in, Java SE 6
ubik@ubik-laptop:~$ dpkg -l | grep firefox
ii firefox 3.5.5+nobinonly-0ubuntu0.9.10.1 meta package for the popular mozilla web bro
ii firefox-3.5 3.5.5+nobinonly-0ubuntu0.9.10.1 safe and easy web browser from Mozilla
ii firefox-3.5-branding 3.5.5+nobinonly-0ubuntu0.9.10.1 Package that ships the firefox branding
ii firefox-3.5-gnome-support 3.5.5+nobinonly-0ubuntu0.9.10.1 Support for Gnome in Mozilla Firefox
ii firefox-gnome-support 3.5.5+nobinonly-0ubuntu0.9.10.1 meta package pointing to the latest gnome-su

ubik@ubik-laptop:~$ firefox -console
[...]
LoadPlugin: failed to initialize shared library /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libnpjp2.so [/usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libnpjp2.so: cannot enable executable stack as shared object requires: Operation not permitted]
[...]
Failed to create Java VM