On both USB and HD based vanilla 6.7.1 installs, the spellcheck in Libre Office does not seem to be working. First sign was no wavy red underline under mis-spelled words with Auto-Spellcheck enabled, then I found that selecting a manual check had no effect. The spell-check screen comes up but doesn't do anything with the highlighted word ... no offer of alternatives, merely a message that the "spellcheck is complete". Is this a bug in Libre Office or Knoppix, or is it something to do with display limitations in LXDE?