Start: applet not initialized

Binary package hint: firefox-3.0

apt-cache policy icedtea6-plugin sun-java6-plugin
icedtea6-plugin:

icedtea6-plugin:
  Installed: 6b14-1.4.1-0ubuntu7
  Candidate: 6b14-1.4.1-0ubuntu7
  Version table:
 *** 6b14-1.4.1-0ubuntu7 0
        500 http://archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
sun-java6-plugin:
  Installed: 6-13-1
  Candidate: 6-13-1
  Version table:
 *** 6-13-1 0
        500 http://archive.ubuntu.com jaunty/multiverse Packages
        100 /var/lib/dpkg/status

lsb_release -rd

Description: Ubuntu 9.04
Release: 9.04

I am using Webmin and am not able to browse file manager from the client.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
Package: firefox-3.0 3.0.11+build2+nobinonly-0ubuntu0.9.04.1
ProcEnviron:
 LANG=en_ZA.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.28-13-generic i686