Ruth,
   
  Watch the anode electrode carefully when you apply the the voltage. If a 
small white cloud drifts downward, then there is salt in you DW, and your still 
is not working correctly.

  You mentioned

    The taste of the last batch seemed different and the glass bottle had some 
white stuff in the bottom.  
   
  The "white stuff" is probably silver chloride that came from salt being in 
your DW.
   
  "Ole Bob"