diff --git a/modules/forum.module b/modules/forum.module
index 2015a42c0021a35d5d79db92d6fea2f705c8fff5..d50dcbc005de446a1db103fdafad1b9a8a6220ec 100644
--- a/modules/forum.module
+++ b/modules/forum.module
@@ -661,7 +661,7 @@ function forum_get_forums($tid = 0) {
     // This query does not use full ANSI syntax since MySQL 3.x does not support
     // table1 INNER JOIN table2 INNER JOIN table3 ON table2_criteria ON table3_criteria
     // used to join node_comment_statistics to users.
-    $sql = "SELECT n.nid, l.last_comment_timestamp, IF(l.last_comment_uid, cu.name, l.last_comment_name) as last_comment_name, l.last_comment_uid FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r WHERE  n.nid = r.nid AND r.tid = %d AND n.status = 1 AND n.type = 'forum' AND l.last_comment_uid = cu.uid AND n.nid = l.nid ORDER BY l.last_comment_timestamp DESC";
+    $sql = "SELECT n.nid, l.last_comment_timestamp, IF(l.last_comment_uid != 0, cu.name, l.last_comment_name) as last_comment_name, l.last_comment_uid FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r WHERE  n.nid = r.nid AND r.tid = %d AND n.status = 1 AND n.type = 'forum' AND l.last_comment_uid = cu.uid AND n.nid = l.nid ORDER BY l.last_comment_timestamp DESC";
     $sql = db_rewrite_sql($sql);
     $topic = db_fetch_object(db_query_range($sql, $forum->tid, 0, 1));
 
@@ -711,7 +711,7 @@ function forum_get_topics($tid, $sortby, $forum_per_page) {
 
   $term = taxonomy_get_term($tid);
 
-  $sql = db_rewrite_sql("SELECT n.nid, f.tid, n.title, n.sticky, u.name, u.uid, n.created AS timestamp, n.comment AS comment_mode, l.last_comment_timestamp, IF(l.last_comment_uid, cu.name, l.last_comment_name) AS last_comment_name, l.last_comment_uid, l.comment_count AS num_comments FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r, {users} u, {forum} f WHERE n.status = 1 AND l.last_comment_uid = cu.uid AND n.nid = l.nid AND n.nid = r.nid AND r.tid = %d AND n.uid = u.uid AND n.vid = f.vid");
+  $sql = db_rewrite_sql("SELECT n.nid, f.tid, n.title, n.sticky, u.name, u.uid, n.created AS timestamp, n.comment AS comment_mode, l.last_comment_timestamp, IF(l.last_comment_uid != 0, cu.name, l.last_comment_name) AS last_comment_name, l.last_comment_uid, l.comment_count AS num_comments FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r, {users} u, {forum} f WHERE n.status = 1 AND l.last_comment_uid = cu.uid AND n.nid = l.nid AND n.nid = r.nid AND r.tid = %d AND n.uid = u.uid AND n.vid = f.vid");
   $sql .= tablesort_sql($forum_topic_list_header, 'n.sticky DESC,');
   $sql .= ', n.created DESC';  // Always add a secondary sort order so that the news forum topics are on top.
 
diff --git a/modules/forum/forum.module b/modules/forum/forum.module
index 2015a42c0021a35d5d79db92d6fea2f705c8fff5..d50dcbc005de446a1db103fdafad1b9a8a6220ec 100644
--- a/modules/forum/forum.module
+++ b/modules/forum/forum.module
@@ -661,7 +661,7 @@ function forum_get_forums($tid = 0) {
     // This query does not use full ANSI syntax since MySQL 3.x does not support
     // table1 INNER JOIN table2 INNER JOIN table3 ON table2_criteria ON table3_criteria
     // used to join node_comment_statistics to users.
-    $sql = "SELECT n.nid, l.last_comment_timestamp, IF(l.last_comment_uid, cu.name, l.last_comment_name) as last_comment_name, l.last_comment_uid FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r WHERE  n.nid = r.nid AND r.tid = %d AND n.status = 1 AND n.type = 'forum' AND l.last_comment_uid = cu.uid AND n.nid = l.nid ORDER BY l.last_comment_timestamp DESC";
+    $sql = "SELECT n.nid, l.last_comment_timestamp, IF(l.last_comment_uid != 0, cu.name, l.last_comment_name) as last_comment_name, l.last_comment_uid FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r WHERE  n.nid = r.nid AND r.tid = %d AND n.status = 1 AND n.type = 'forum' AND l.last_comment_uid = cu.uid AND n.nid = l.nid ORDER BY l.last_comment_timestamp DESC";
     $sql = db_rewrite_sql($sql);
     $topic = db_fetch_object(db_query_range($sql, $forum->tid, 0, 1));
 
@@ -711,7 +711,7 @@ function forum_get_topics($tid, $sortby, $forum_per_page) {
 
   $term = taxonomy_get_term($tid);
 
-  $sql = db_rewrite_sql("SELECT n.nid, f.tid, n.title, n.sticky, u.name, u.uid, n.created AS timestamp, n.comment AS comment_mode, l.last_comment_timestamp, IF(l.last_comment_uid, cu.name, l.last_comment_name) AS last_comment_name, l.last_comment_uid, l.comment_count AS num_comments FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r, {users} u, {forum} f WHERE n.status = 1 AND l.last_comment_uid = cu.uid AND n.nid = l.nid AND n.nid = r.nid AND r.tid = %d AND n.uid = u.uid AND n.vid = f.vid");
+  $sql = db_rewrite_sql("SELECT n.nid, f.tid, n.title, n.sticky, u.name, u.uid, n.created AS timestamp, n.comment AS comment_mode, l.last_comment_timestamp, IF(l.last_comment_uid != 0, cu.name, l.last_comment_name) AS last_comment_name, l.last_comment_uid, l.comment_count AS num_comments FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r, {users} u, {forum} f WHERE n.status = 1 AND l.last_comment_uid = cu.uid AND n.nid = l.nid AND n.nid = r.nid AND r.tid = %d AND n.uid = u.uid AND n.vid = f.vid");
   $sql .= tablesort_sql($forum_topic_list_header, 'n.sticky DESC,');
   $sql .= ', n.created DESC';  // Always add a secondary sort order so that the news forum topics are on top.