When you "just did that", you *did* click on Default, correct? And when
you "just did that", did it fix the problem in the document you had open
at the time? And you said "yes" if you were prompted to save changes to
your Normal.dot template, correct?
In a new document, type a misspelled word that is not identified as
such, select the word, and check to see whether it is the language that
is incorrect, or if it is the "do not check" attribute that is incorrect.