2_Column.php

    <?php
/* In the case you're rendering the very last post, do nothing: */
                if ($count == 4){
                  // Do nothing, thematic will add a '</div>' to close the last post
                /* Is this the last post in the column?
                That means if the loop number divides by 2 (or whatever post per column number we choose) */
                } elseif ($count%2 == 0){
                  /* if this is the bottom post, close the div and start a new div: */
                  echo '</div>
            
                  <div id="column2" class="prepend-8">';
                  
                } else {
                  /* Do nothing, just move on, nothing to see here... */
                }

              /* We're about to finish the loop, let's add 1 to the count: */
              
              $count = $count + 1;
         
            endwhile; /* loop done, go back up */

          /* All the posts are done, close the last column: */
            echo '</div>';
            ?>