I upgraded to Wordpress 2.1 two nights ago, and ever since, my links widget has not worked. I have finally figured out a solution:

In Tiga.php under wp-content\themes\tiga-06:

    andromeda strain the dvd

    Change Function tiga_link_widget to:

    function tiga_links_widget($args)
    {
    global $wpdb;
    extract($args);/* Links from the 'Links Manager' */
    $link_cats = $wpdb->get_results('SELECT cat_id, cat_name FROM ' . $wpdb->categories . ' WHERE link_count > 0');
    foreach ($link_cats as $link_cat)
    {echo '<li class="left-wp-widget %2$s">' .
    $before_title . $link_cat->cat_name . $after_title .
    '<ul>';
    wp_get_links($link_cat->cat_id);
    echo '</ul>'.
    $after_widget;}
    }