diff -urNp karma/karma.css karma-mine/karma.css
--- karma/karma.css	2006-06-28 00:21:33.000000000 -0700
+++ karma-mine/karma.css	2007-01-15 17:49:08.000000000 -0800
@@ -58,11 +58,13 @@ ul.karma-stars a.rating-1 { left:  0px; 
 ul.karma-stars a.rating-2 { left: 17px; }
 ul.karma-stars a.rating-3 { left: 34px; }
 ul.karma-stars a.rating-4 { left: 51px; }
+ul.karma-stars a.rating-5 { left: 68px; }
 
 ul.karma-stars a.rating-1:hover { width: 17px; }
 ul.karma-stars a.rating-2:hover { width: 34px; }
 ul.karma-stars a.rating-3:hover { width: 51px; }
 ul.karma-stars a.rating-4:hover { width: 68px; }
+ul.karma-stars a.rating-5:hover { width: 85px; }
 
 ul.karma-stars li.current-rating {
   background: url(stars.png) left top;
diff -urNp karma/karma.module karma-mine/karma.module
--- karma/karma.module	2006-12-07 18:09:02.000000000 -0800
+++ karma-mine/karma.module	2007-01-15 14:45:59.000000000 -0800
@@ -170,12 +170,13 @@ function karma_get_rating($type, $object
  * @param $uid
  *   The user's uid.
  */
-function karma_update_user_karma($uid) {
+function karma_update_user_karma($uid, $orig_karma) {
   if (!$uid) {
     // The anonymous user does not have karma.
     return;
   }
 
+  $min = (float) variable_get('karma_minimum_rating', '0.0');
   $ratings = db_query_range("SELECT k.rating, k.count, GREATEST(c.timestamp, n.created) AS timestamp FROM {karma_objects} k LEFT JOIN {comments} c ON k.type = 'cid' AND k.id = c.cid AND c.uid = %d LEFT JOIN {node} n ON k.type = 'nid' AND k.id = n.nid AND n.uid = %d WHERE c.timestamp IS NOT NULL OR n.created IS NOT NULL ORDER BY timestamp DESC, k.rating", $uid, $uid, 0, 30);
   $comment_num = 1;
   $sum = 0;
@@ -197,6 +198,14 @@ function karma_update_user_karma($uid) {
   // First delete any existing entry, then add the new entry
   db_query('DELETE FROM {karma_users} WHERE uid = %d', $uid);
   db_query('INSERT INTO {karma_users} (uid, karma) VALUES (%d, %f)', $uid, $karma);
+  
+  // Update all comment karma counts that involve this user if user crosses the minimum rating threshold in either direction
+  if ((is_null($orig_karma) && !is_null($karma)) || ($orig_karma > $min && $karma <= $min) || ($orig_karma <= $min && $karma > $min)) {
+    $nids = db_query('SELECT DISTINCT(nid) FROM comments WHERE uid = %d', $uid);
+    while ($nid = db_fetch_object($nids)) {
+      karma_update_comment_statistics($nid->nid);
+    }
+  }
 }
 
 function karma_update_comment_statistics($nid) {
@@ -221,6 +230,9 @@ function karma_comment(&$comment, $op) {
       $comment = theme('karma_comment_rating', $comment, (float) $rating, $count, 'karma/comment/'. $comment->cid, $rating_form);
     }
   }
+  if ($op == 'insert') {
+    karma_update_comment_statistics($comment['nid']);
+  }
 }
 
 function karma_nodeapi(&$node, $op, $teaser = NULL, $page = NULL) {
@@ -247,7 +259,9 @@ function karma_nodeapi(&$node, $op, $tea
 function karma_rate_validate($form_id, $form_values) {
   global $user;
 
-  if (!is_numeric($form_values['rating']) || $form_values['rating'] > 5 || $form_values['rating'] < -1) {
+  $max_rating = variable_get('karma_rating_max', 5);
+
+  if (!is_numeric($form_values['rating']) || $form_values['rating'] > $max_rating || $form_values['rating'] < -1) {
     form_set_error('rating', t('Invalid rating.'));
   }
   if ($form_values['rating'] == 0 && !karma_user_is_trusted()) {
@@ -261,13 +275,18 @@ function karma_rate_submit($form_id, $fo
   switch ($form_values['type']) {
     case 'comment':
       $id_type = 'cid';
+      $object = db_fetch_object(db_query('SELECT uid, nid FROM {comments} WHERE cid = %d', $form_values['id']));
       break;
 
     case 'node':
       $id_type = 'nid';
+      $object = db_fetch_object(db_query('SELECT uid, nid FROM {node} WHERE nid = %d', $form_values['id']));
       break;
   }
 
+  // Store the comment owner's original karma
+  $orig_karma = db_result(db_query('SELECT karma FROM {karma_users} WHERE uid = %d', $object->uid));
+
   // Remove any existing rating and insert the new rating
   db_query("DELETE FROM {karma_ratings} WHERE uid = %d AND id = %d AND type = '%s'", $user->uid, $form_values['id'], $id_type);
   if ($form_values['rating'] != -1) {
@@ -280,16 +299,7 @@ function karma_rate_submit($form_id, $fo
   db_query("INSERT INTO {karma_objects} (id, type, rating, count) SELECT id, '%s', avg(rating), count(uid) FROM {karma_ratings} WHERE id = %d AND type = '%s' GROUP BY id", $id_type, $form_values['id'], $id_type);
 
   // Update the comment owner's karma
-  switch ($form_values['type']) {
-    case 'comment':
-      $object = db_fetch_object(db_query('SELECT uid, nid FROM {comments} WHERE cid = %d', $form_values['id']));
-      break;
-
-    case 'node':
-      $object = db_fetch_object(db_query('SELECT uid, nid FROM {node} WHERE nid = %d', $form_values['id']));
-      break;
-  }
-  karma_update_user_karma($object->uid);
+  karma_update_user_karma($object->uid, $orig_karma);
 
   if ($id_type == 'cid') {
     karma_update_comment_statistics($object->nid);
@@ -352,13 +362,15 @@ function _karma_rating_form($type, $obje
       break;
   }
 
+  $max_rating = variable_get('karma_rating_max', 5);
+
   // Rating form. The user must be logged in, have permission to rate
   // comments, and not be the author of the comment.
   if (isset($user->uid) && $object->uid != $user->uid) {
     $form = array('#attributes' => array('class' => 'karma-rate-comment'));
     $rating_options = array(-1 => t('Not rated'));
     $rating_titles = variable_get('karma_rating_titles', array());
-    foreach (range(karma_user_is_trusted() ? 0 : 1, 4) as $rating) {
+    foreach (range(karma_user_is_trusted() ? 0 : 1, $max_rating) as $rating) {
       if (isset($rating_titles[$rating]) && strlen($rating_titles[$rating]) > 0) {
         $rating_options[$rating] = $rating .': '. $rating_titles[$rating];
       }
@@ -414,7 +426,7 @@ function _karma_rating_form($type, $obje
           break;
       }
       $output .= '<li id="current-rating-'. $type .'-'. $id .'" class="current-rating" style="width: '. $current_rating * 17 .'px;"> </li>';
-      foreach (range(1, 4) as $rating) {
+      foreach (range(1, $max_rating) as $rating) {
         $output .= '<li><a class="rating-'. $rating .'" onclick="karmaSelectRating(\''. $type .'\', '. $id .', '. $rating .')"'. (isset($rating_titles[$rating]) ? ' title="'. $rating_titles[$rating] .'"'  : '') .'> </a></li>';
       }
       $output .= '</ul>';
@@ -575,15 +587,27 @@ function karma_settings_page() {
     '#default_value' => variable_get('karma_minimum_rating', '0.0'),
     '#description' => t('Trusted users may choose to view comments with low ratings.'),
   );
+  
   $form['karma_trusted_karma'] = array(
     '#type' => 'select',
     '#title' => t('Minimum rating for trusted users'),
-    '#options' => drupal_map_assoc(array('2.5', '3.0', '3.5')),
+    '#options' => drupal_map_assoc(array('1.5', '2.0', '2.5', '3.0', '3.5')),
     '#default_value' => variable_get('karma_trusted_karma', '3.5'),
-    '#description' => t('Trusted users may view low-rated comments.'),
+    '#description' => t('Trusted users may view low-rated comments.  If you set this higher than the maximum rating, you are preventing users from achieving trusted status.'),
+  );
+
+  $form['karma_rating_max'] = array(
+    '#type' => 'select',
+    '#title' => t('Maximum rating of comments'),
+    '#options' => drupal_map_assoc(array('3', '4', '5')),
+    '#default_value' => variable_get('karma_rating_max', '4'),
+    '#description' => t('Sets the maximum rating a comment may receive.'),
   );
 
   $karma_rating_titles = variable_get('karma_rating_titles', array());
+
+  $rating_max = variable_get('karma_rating_max', 5);
+
   $form['karma_rating_titles'] = array(
     '#type' => 'fieldset',
     '#title' => t('Rating titles'),
@@ -594,6 +618,7 @@ function karma_settings_page() {
       '#type' => 'textfield',
       '#title' => t('Title for %rating', array('%rating' => $rating)),
       '#default_value' => $karma_rating_titles[$rating],
+      '#description' => ($rating > $rating_max) ? t('Rating title above maximum rating.') : '',
     );
   }
 
@@ -602,6 +627,7 @@ function karma_settings_page() {
     '#title' => t('Selector type'),
     '#options' => array('select' => t('Drop down selection'), 'stars' => t('Stars')),
     '#default_value' => variable_get('karma_selector_type', 'select'),
+    '#description' => t('At the moment stars work only when maximum rating is set to 4.'),
   );
 
   $form['karma_merge_widgets'] = array(
diff -urNp karma/karma.theme karma-mine/karma.theme
--- karma/karma.theme	2006-06-28 00:21:33.000000000 -0700
+++ karma-mine/karma.theme	2007-01-15 11:39:21.000000000 -0800
@@ -41,13 +41,14 @@ function theme_karma_comment_rating_star
 }
 
 function theme_karma_comment_rating_stars_content($rating, $users, $more_path) {
+  $max_rating = variable_get('karma_rating_max', 5);
   if ($users > 0) {
     $output .= t('Average (%votes):', array('%votes' => format_plural($users, '1 vote', '%count votes')));
   }
   else {
     $output = t('no votes');
   }
-  $output .= '<div class="karma-stars"><span title="'. t('%rating out of 4', array('%rating' => $rating)) .'" style="width: '. ($rating * 17) .'px"> </span></div>';
+  $output .= '<div class="karma-stars"><span title="'. t('%rating out of %max_rating', array('%rating' => $rating, '%max_rating' => $max_rating)) .'" style="width: '. ($rating * 17) .'px"> </span></div>';
   $output .= l(t('see individual ratings'), $more_path);
 
   return $output;
@@ -77,13 +78,14 @@ function theme_karma_node_rating_stars($
 }
 
 function theme_karma_node_rating_stars_content($rating, $users, $more_path) {
+  $max_rating = variable_get('karma_rating_max', 5);
   if ($users > 0) {
     $output .= t('Average (%votes):', array('%votes' => format_plural($users, '1 vote', '%count votes')));
   }
   else {
     $output = t('no votes');
   }
-  $output .= '<div class="karma-stars"><span title="'. t('%rating out of 4', array('%rating' => $rating)) .'" style="width: '. ($rating * 17) .'px"> </span></div>';
+  $output .= '<div class="karma-stars"><span title="'. t('%rating out of %max_rating', array('%rating' => $rating, '%max_rating' => $max_rating)) .'" style="width: '. ($rating * 17) .'px"> </span></div>';
   $output .= l(t('see individual ratings'), $more_path);
 
   return $output;