QString ksniffPath = KStandardDirs::findExe("ksniff");
  if (ksniffPath.isEmpty())
  {
    KMessageBox::sorry(0L, i18n("<p>The 'ksniff' executable was not found in your PATH<br>"
        "environment. You need it to capture packets.<br><br>" \
        "Your installation is not correct.</p>"));
    return -1;
  }

  if (lstat(ksniffPath.ascii(), &statbuf) == -1)
  {
    KMessageBox::sorry(0L, i18n("<p>Cannot determine the 'ksniff' executable properties.<br>" \
                               "Your installation is not correct.</p>"));
    return -1;
  }

  if ((S_ISUID & statbuf.st_mode) != S_ISUID)
  {
    KMessageBox::sorry(0L, i18n("<p>The 'ksniff' executable needs root privileges to capture packets.<br>" \
                               "Your installation is not correct.</p>"));
    return -1;
  }